Search criteria
95 vulnerabilities found for libssh by libssh
CVE-2025-14821 (GCVE-0-2025-14821)
Vulnerability from nvd – Published: 2026-04-07 16:34 – Updated: 2026-04-28 20:27
VLAI?
Title
Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows
Summary
A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.
Severity ?
7.8 (High)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7067 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-14821 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2423148 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.0-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:51
Credits
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CVE-2026-0968 (GCVE-0-2026-0968)
Vulnerability from nvd – Published: 2026-03-26 20:06 – Updated: 2026-05-01 16:01
VLAI?
Title
Libssh: libssh: denial of service due to malformed sftp message
Summary
A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
Severity ?
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0968 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436982 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:46
Credits
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CVE-2026-0966 (GCVE-0-2026-0966)
Vulnerability from nvd – Published: 2026-03-26 20:06 – Updated: 2026-05-11 16:13
VLAI?
Title
Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()
Summary
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Severity ?
6.5 (Medium)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7067 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-0966 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433121 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.0-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
Credits
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CVE-2026-0964 (GCVE-0-2026-0964)
Vulnerability from nvd – Published: 2026-03-26 20:06 – Updated: 2026-05-04 13:07
VLAI?
Title
Libssh: improper sanitation of paths received from scp servers
Summary
A malicious SCP server can send unexpected paths that could make the
client application override local files outside of working directory.
This could be misused to create malicious executable or configuration
files and make the user execute them under specific consequences.
This is the same issue as in OpenSSH, tracked as CVE-2019-6111.
Severity ?
5 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0964 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436979 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:44
Credits
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CVE-2026-0965 (GCVE-0-2026-0965)
Vulnerability from nvd – Published: 2026-03-26 20:06 – Updated: 2026-05-12 16:55
VLAI?
Title
Libssh: libssh: denial of service via improper configuration file handling
Summary
A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.
Severity ?
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0965 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436980 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
Credits
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CVE-2026-0967 (GCVE-0-2026-0967)
Vulnerability from nvd – Published: 2026-03-26 20:06 – Updated: 2026-05-01 16:01
VLAI?
Title
Libssh: libssh: denial of service via inefficient regular expression processing
Summary
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
Severity ?
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0967 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436981 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
Credits
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CVE-2026-3731 (GCVE-0-2026-3731)
Vulnerability from nvd – Published: 2026-03-08 10:32 – Updated: 2026-03-11 19:50
VLAI?
Title
libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds
Summary
A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
Severity ?
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.349709 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.349709 | signaturepermissions-required |
| https://vuldb.com/?submit.767120 | third-party-advisory |
| https://www.libssh.org/security/advisories/libssh… | related |
| https://gitlab.com/libssh/libssh-mirror/-/commit/… | patch |
| https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz | patch |
Impacted products
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CVE-2025-5449 (GCVE-0-2025-5449)
Vulnerability from nvd – Published: 2025-07-25 17:19 – Updated: 2026-01-08 03:11
VLAI?
Title
Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service
Summary
A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.
Severity ?
6.5 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
8 references
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0.11.0 , ≤ 0.11.1
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
Credits
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CVE-2025-8114 (GCVE-0-2025-8114)
Vulnerability from nvd – Published: 2025-07-24 14:14 – Updated: 2026-01-22 00:07
VLAI?
Title
Libssh: null pointer dereference in libssh kex session id calculation
Summary
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Severity ?
4.7 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-8114 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2383220 | issue-trackingx_refsource_REDHAT |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://www.libssh.org/security/advisories/CVE-20… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 0.11.3
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-07-24 00:00
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CVE-2025-5987 (GCVE-0-2025-5987)
Vulnerability from nvd – Published: 2025-07-07 14:24 – Updated: 2026-03-20 20:05
VLAI?
Title
Libssh: invalid return code for chacha20 poly1305 with openssl backend
Summary
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
Severity ?
8.1 (High)
CWE
- CWE-393 - Return of Wrong Status Code
Assigner
References
17 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0.10.0 , < 0.11.2
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.11.1-5.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:0.11.1-4.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-17.el9_7 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-17.el9_7 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:0.10.4-9.el9_2.2 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:9.2::baseos cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:0.10.4-13.el9_4.2 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.4::baseos cpe:/a:redhat:rhel_eus:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:0.10.4-15.el9_6.1 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.6::baseos cpe:/a:redhat:rhel_eus:9.6::appstream |
|
| Red Hat | Red Hat OpenShift Container Platform 4.13 |
Unaffected:
413.92.202602240113-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.13::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.14 |
Unaffected:
414.92.202601191325-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.14::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.15 |
Unaffected:
415.92.202601271320-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.15::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.16 |
Unaffected:
416.94.202601160124-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.16::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 |
Unaffected:
417.94.202601120213-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.17::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
Unaffected:
418.94.202601202224-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.18::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 |
Unaffected:
9.6.20260123-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.19::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.20 |
Unaffected:
4.20.9.6.202601211057-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.20::el9 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
Date Public ?
2025-04-26 00:00
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CVE-2025-5351 (GCVE-0-2025-5351)
Vulnerability from nvd – Published: 2025-07-04 08:16 – Updated: 2026-01-08 03:07
VLAI?
Title
Libssh: double free vulnerability in libssh key export functions
Summary
A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.
Severity ?
6.5 (Medium)
CWE
- CWE-415 - Double Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-5351 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2369367 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh |
Affected:
0.10.0 , < 0.11.2
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
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CVE-2025-5372 (GCVE-0-2025-5372)
Vulnerability from nvd – Published: 2025-07-04 06:01 – Updated: 2026-04-07 08:30
VLAI?
Title
Libssh: incorrect return code handling in ssh_kdf() in libssh
Summary
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
Severity ?
5 (Medium)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:21977 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:23024 | vendor-advisoryx_refsource_REDHAT |
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| https://bugzilla.redhat.com/show_bug.cgi?id=2369388 | issue-trackingx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh |
Affected:
0 , < 0.11.2
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.9.6-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.9.6-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:0.9.6-3.el9_0.2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0::appstream cpe:/o:redhat:rhel_e4s:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
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CVE-2025-14821 (GCVE-0-2025-14821)
Vulnerability from cvelistv5 – Published: 2026-04-07 16:34 – Updated: 2026-04-28 20:27
VLAI?
Title
Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on windows
Summary
A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.
Severity ?
7.8 (High)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7067 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-14821 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2423148 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.0-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:51
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CVE-2026-0965 (GCVE-0-2026-0965)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-12 16:55
VLAI?
Title
Libssh: libssh: denial of service via improper configuration file handling
Summary
A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.
Severity ?
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0965 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436980 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
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| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
Credits
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CVE-2026-0967 (GCVE-0-2026-0967)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-01 16:01
VLAI?
Title
Libssh: libssh: denial of service via inefficient regular expression processing
Summary
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
Severity ?
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0967 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436981 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
Credits
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CVE-2026-0968 (GCVE-0-2026-0968)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-01 16:01
VLAI?
Title
Libssh: libssh: denial of service due to malformed sftp message
Summary
A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.
Severity ?
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0968 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436982 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:46
Credits
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CVE-2026-0964 (GCVE-0-2026-0964)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-04 13:07
VLAI?
Title
Libssh: improper sanitation of paths received from scp servers
Summary
A malicious SCP server can send unexpected paths that could make the
client application override local files outside of working directory.
This could be misused to create malicious executable or configuration
files and make the user execute them under specific consequences.
This is the same issue as in OpenSSH, tracked as CVE-2019-6111.
Severity ?
5 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-0964 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2436979 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:44
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CVE-2026-0966 (GCVE-0-2026-0966)
Vulnerability from cvelistv5 – Published: 2026-03-26 20:06 – Updated: 2026-05-11 16:13
VLAI?
Title
Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()
Summary
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Severity ?
6.5 (Medium)
CWE
- CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:7067 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-0966 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2433121 | issue-trackingx_refsource_REDHAT |
| https://www.libssh.org/2026/02/10/libssh-0-12-0-a… |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
0.12.0-1.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2026-02-10 18:47
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CVE-2026-3731 (GCVE-0-2026-3731)
Vulnerability from cvelistv5 – Published: 2026-03-08 10:32 – Updated: 2026-03-11 19:50
VLAI?
Title
libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds
Summary
A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
Severity ?
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.349709 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.349709 | signaturepermissions-required |
| https://vuldb.com/?submit.767120 | third-party-advisory |
| https://www.libssh.org/security/advisories/libssh… | related |
| https://gitlab.com/libssh/libssh-mirror/-/commit/… | patch |
| https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz | patch |
Impacted products
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CVE-2025-5449 (GCVE-0-2025-5449)
Vulnerability from cvelistv5 – Published: 2025-07-25 17:19 – Updated: 2026-01-08 03:11
VLAI?
Title
Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service
Summary
A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.
Severity ?
6.5 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
8 references
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0.11.0 , ≤ 0.11.1
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
Credits
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CVE-2025-8114 (GCVE-0-2025-8114)
Vulnerability from cvelistv5 – Published: 2025-07-24 14:14 – Updated: 2026-01-22 00:07
VLAI?
Title
Libssh: null pointer dereference in libssh kex session id calculation
Summary
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
Severity ?
4.7 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-8114 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2383220 | issue-trackingx_refsource_REDHAT |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://git.libssh.org/projects/libssh.git/commit… | |
| https://www.libssh.org/security/advisories/CVE-20… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 0.11.3
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-07-24 00:00
Credits
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CVE-2025-5987 (GCVE-0-2025-5987)
Vulnerability from cvelistv5 – Published: 2025-07-07 14:24 – Updated: 2026-03-20 20:05
VLAI?
Title
Libssh: invalid return code for chacha20 poly1305 with openssl backend
Summary
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
Severity ?
8.1 (High)
CWE
- CWE-393 - Return of Wrong Status Code
Assigner
References
17 references
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0.10.0 , < 0.11.2
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:0.11.1-5.el10_1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.1 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:0.11.1-4.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-17.el9_7 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.10.4-17.el9_7 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:0.10.4-9.el9_2.2 , < *
(rpm)
cpe:/o:redhat:rhel_e4s:9.2::baseos cpe:/a:redhat:rhel_e4s:9.2::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:0.10.4-13.el9_4.2 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.4::baseos cpe:/a:redhat:rhel_eus:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:0.10.4-15.el9_6.1 , < *
(rpm)
cpe:/o:redhat:rhel_eus:9.6::baseos cpe:/a:redhat:rhel_eus:9.6::appstream |
|
| Red Hat | Red Hat OpenShift Container Platform 4.13 |
Unaffected:
413.92.202602240113-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.13::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.14 |
Unaffected:
414.92.202601191325-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.14::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.15 |
Unaffected:
415.92.202601271320-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.15::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.16 |
Unaffected:
416.94.202601160124-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.16::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 |
Unaffected:
417.94.202601120213-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.17::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
Unaffected:
418.94.202601202224-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.18::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 |
Unaffected:
9.6.20260123-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.19::el9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4.20 |
Unaffected:
4.20.9.6.202601211057-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.20::el9 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
Date Public ?
2025-04-26 00:00
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CVE-2025-5351 (GCVE-0-2025-5351)
Vulnerability from cvelistv5 – Published: 2025-07-04 08:16 – Updated: 2026-01-08 03:07
VLAI?
Title
Libssh: double free vulnerability in libssh key export functions
Summary
A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.
Severity ?
6.5 (Medium)
CWE
- CWE-415 - Double Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-5351 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2369367 | issue-trackingx_refsource_REDHAT |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh |
Affected:
0.10.0 , < 0.11.2
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
Credits
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CVE-2025-5372 (GCVE-0-2025-5372)
Vulnerability from cvelistv5 – Published: 2025-07-04 06:01 – Updated: 2026-04-07 08:30
VLAI?
Title
Libssh: incorrect return code handling in ssh_kdf() in libssh
Summary
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
Severity ?
5 (Medium)
CWE
- CWE-682 - Incorrect Calculation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2025:21977 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:23024 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2025-5372 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2369388 | issue-trackingx_refsource_REDHAT |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh |
Affected:
0 , < 0.11.2
(semver)
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.9.6-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.9.6-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:0.9.6-3.el9_0.2 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0::appstream cpe:/o:redhat:rhel_e4s:9.0::baseos |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
Date Public ?
2025-06-24 00:00
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FKIE_CVE-2025-5449
Vulnerability from fkie_nvd - Published: 2025-07-25 18:15 - Updated: 2026-01-08 04:15
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.
References
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FKIE_CVE-2025-8114
Vulnerability from fkie_nvd - Published: 2025-07-24 15:15 - Updated: 2025-11-17 21:15
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
References
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FKIE_CVE-2025-5987
Vulnerability from fkie_nvd - Published: 2025-07-07 15:15 - Updated: 2026-03-20 21:17
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.
References
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FKIE_CVE-2025-5351
Vulnerability from fkie_nvd - Published: 2025-07-04 09:15 - Updated: 2026-01-08 04:15
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.
References
| URL | Tags | ||
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2025-5351 | Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2369367 | Issue Tracking, Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh | * | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 6.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| redhat | enterprise_linux | 10.0 |
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FKIE_CVE-2025-5372
Vulnerability from fkie_nvd - Published: 2025-07-04 06:15 - Updated: 2025-12-10 19:16
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| libssh | libssh | * | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 6.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| redhat | enterprise_linux | 10.0 |
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FKIE_CVE-2025-5318
Vulnerability from fkie_nvd - Published: 2025-06-24 14:15 - Updated: 2026-02-27 17:16
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authenticated remote attacker to potentially read unintended memory regions, exposing sensitive information or affect service behavior.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| redhat | enterprise_linux | 10.0 | |
| libssh | libssh | * |
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