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49 vulnerabilities found for libreswan by libreswan
CVE-2026-50722 (GCVE-0-2026-50722)
Vulnerability from nvd – Published: 2026-07-02 21:34 – Updated: 2026-07-07 17:02
VLAI
EPSS
VEX
Title
IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload
Summary
Libreswan, via the function RSA_authenticate_hash_signature_pkcs1_1_5_rsa(), did not correctly verify the DER encoding of the ASN.1 digest when the IKEv2 AUTH payload was encoded using RSASSA-PKCS1-v1_5 (RFC 8017). A remote attacker can use a variation on the Bleichenbacher attack to forge the AUTH payload when small public exponents are used (e.g., e=3), leading to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the AUTH payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of the remote IKE peer are not affected.
Severity
7.5 (High)
8.1 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-50722/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-50722/ | patch |
| https://libreswan.org/security/CVE-2026-50721/CVE… | related |
| https://www.rfc-editor.org/rfc/rfc8017 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
0 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2026-50721 (GCVE-0-2026-50721)
Vulnerability from nvd – Published: 2026-07-02 21:44 – Updated: 2026-07-07 17:01
VLAI
EPSS
VEX
Title
IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload
Summary
Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS #1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the Bleichenbacher attack to forge the SIG payload when small public exponents are being used (e.g., e=3), which could lead to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the SIG payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of remote IKE peers are not affected.
Severity
7.5 (High)
8.1 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-50721/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-50721/ | patch |
| https://libreswan.org/security/CVE-2026-50722/CVE… | related |
| https://www.rfc-editor.org/rfc/rfc2313 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
0 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2026-12413 (GCVE-0-2026-12413)
Vulnerability from nvd – Published: 2026-07-02 21:19 – Updated: 2026-07-07 17:02
VLAI
EPSS
VEX
Title
IKEv2 Denial of Service via malformed fragmentation
Summary
An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemble_v2_incoming_fragments() would ignore unknown outer payloads but still store these in a fixed size array msg_digest.digest[PAYLIMIT]. An off-by-one error in the assertion PASSERT(logger, md->digest_roof < elemsof(md->digest)) causes the daemon to abort. No remote code execution is possible. Any configuration that allows IKEv2 connections that do not set fragmentation=no are vulnerable. IKEv1 is not affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
4.6 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2024-3652 (GCVE-0-2024-3652)
Vulnerability from nvd – Published: 2024-04-11 01:32 – Updated: 2026-02-27 15:19
VLAI
EPSS
VEX
Title
IKEv1 default AH/ESP responder can cause libreswan to abort and restart
Summary
The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- IKEv1 with default AH/ESP configuration can cause libreswan to abort and restart
- CWE-404 - Improper Resource Shutdown or Release
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2024-3652 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2024/04/18/2 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project (www.libreswan.org) | libreswan |
Affected:
3.22 , ≤ 4.14
(semver)
Unaffected: 5.0 |
Date Public
2024-04-12 21:00
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CVE-2023-38712 (GCVE-0-2023-38712)
Vulnerability from nvd – Published: 2023-08-25 00:00 – Updated: 2024-08-02 17:46
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
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CVE-2023-38711 (GCVE-0-2023-38711)
Vulnerability from nvd – Published: 2023-08-25 00:00 – Updated: 2024-08-02 17:46
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan before 4.12. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, a NULL pointer dereference causes a crash and restart of the pluto daemon. NOTE: the earliest affected version is 4.6.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
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CVE-2023-38710 (GCVE-0-2023-38710)
Vulnerability from nvd – Published: 2023-08-25 00:00 – Updated: 2024-11-26 21:53
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
2 references
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CVE-2023-30570 (GCVE-0-2023-30570)
Vulnerability from nvd – Published: 2023-05-28 00:00 – Updated: 2025-01-14 18:14
VLAI
EPSS
VEX
Summary
pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticated IKEv1 Aggressive Mode packets. The earliest affected version is 3.28.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
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CVE-2023-2295 (GCVE-0-2023-2295)
Vulnerability from nvd – Published: 2023-05-17 00:00 – Updated: 2025-01-22 18:25
VLAI
EPSS
VEX
Summary
A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - - Uncontrolled Resource Consumption
Assigner
References
Impacted products
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CVE-2023-23009 (GCVE-0-2023-23009)
Vulnerability from nvd – Published: 2023-02-21 00:00 – Updated: 2025-03-17 17:02
VLAI
EPSS
VEX
Summary
Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libreswan/libreswan/issues/954 | |
| https://www.debian.org/security/2023/dsa-5368 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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CVE-2022-23094 (GCVE-0-2022-23094)
Vulnerability from nvd – Published: 2022-01-15 01:37 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
Libreswan 4.2 through 4.5 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted IKEv1 packet because pluto/ikev1.c wrongly expects that a state object exists. This is fixed in 4.6.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2022-23094 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/issues/585 | x_refsource_MISC |
| https://www.debian.org/security/2022/dsa-5048 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2020-1763 (GCVE-0-2020-1763)
Vulnerability from nvd – Published: 2020-05-12 13:41 – Updated: 2024-08-04 06:46
VLAI
EPSS
VEX
Summary
An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.
Severity
7.5 (High)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2020-1763/CVE-… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=1813329 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/commit/471… | x_refsource_CONFIRM |
| https://www.debian.org/security/2020/dsa-4684 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/202007-21 | vendor-advisoryx_refsource_GENTOO |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
from versions 3.27 till 3.31
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CVE-2019-10155 (GCVE-0-2019-10155)
Vulnerability from nvd – Published: 2019-06-12 13:51 – Updated: 2024-08-04 22:10
VLAI
EPSS
VEX
Summary
The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2019-10155/ | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3391 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
3.29
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CVE-2019-12312 (GCVE-0-2019-12312)
Vulnerability from nvd – Published: 2019-05-24 13:06 – Updated: 2024-08-04 23:17
VLAI
EPSS
VEX
Summary
In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by initiating an IKEv2 IKE_SA_INIT exchange, followed by a bogus INFORMATIONAL exchange instead of the normallly expected IKE_AUTH exchange. This affects send_v2N_spi_response_from_state() in programs/pluto/ikev2_send.c that will then trigger a NULL pointer dereference leading to a restart of libreswan.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.iwantacve.cn/index.php/archives/218/ | x_refsource_MISC |
| https://github.com/libreswan/libreswan/issues/246 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/compare/9b… | x_refsource_MISC |
| https://libreswan.org/security/CVE-2019-12312/CVE… | x_refsource_CONFIRM |
| https://libreswan.org/security/CVE-2019-12312/lib… | x_refsource_CONFIRM |
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CVE-2016-5391 (GCVE-0-2016-5391)
Vulnerability from nvd – Published: 2017-06-13 17:00 – Updated: 2024-08-06 01:00
VLAI
EPSS
VEX
Summary
libreswan before 3.18 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto daemon restart).
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://bugzilla.redhat.com/show_bug.cgi?id=1356183 | x_refsource_CONFIRM |
| https://libreswan.org/security/CVE-2016-5391/CVE-… | x_refsource_CONFIRM |
Date Public
2016-07-13 00:00
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CVE-2026-50721 (GCVE-0-2026-50721)
Vulnerability from cvelistv5 – Published: 2026-07-02 21:44 – Updated: 2026-07-07 17:01
VLAI
EPSS
VEX
Title
IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload
Summary
Libreswan, via the function RSA_authenticate_hash_signature_raw_rsa(), did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS #1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the Bleichenbacher attack to forge the SIG payload when small public exponents are being used (e.g., e=3), which could lead to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the SIG payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of remote IKE peers are not affected.
Severity
7.5 (High)
8.1 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-50721/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-50721/ | patch |
| https://libreswan.org/security/CVE-2026-50722/CVE… | related |
| https://www.rfc-editor.org/rfc/rfc2313 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
0 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2026-50722 (GCVE-0-2026-50722)
Vulnerability from cvelistv5 – Published: 2026-07-02 21:34 – Updated: 2026-07-07 17:02
VLAI
EPSS
VEX
Title
IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload
Summary
Libreswan, via the function RSA_authenticate_hash_signature_pkcs1_1_5_rsa(), did not correctly verify the DER encoding of the ASN.1 digest when the IKEv2 AUTH payload was encoded using RSASSA-PKCS1-v1_5 (RFC 8017). A remote attacker can use a variation on the Bleichenbacher attack to forge the AUTH payload when small public exponents are used (e.g., e=3), leading to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the AUTH payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of the remote IKE peer are not affected.
Severity
7.5 (High)
8.1 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-50722/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-50722/ | patch |
| https://libreswan.org/security/CVE-2026-50721/CVE… | related |
| https://www.rfc-editor.org/rfc/rfc8017 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
0 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2026-12413 (GCVE-0-2026-12413)
Vulnerability from cvelistv5 – Published: 2026-07-02 21:19 – Updated: 2026-07-07 17:02
VLAI
EPSS
VEX
Title
IKEv2 Denial of Service via malformed fragmentation
Summary
An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemble_v2_incoming_fragments() would ignore unknown outer payloads but still store these in a fixed size array msg_digest.digest[PAYLIMIT]. An off-by-one error in the assertion PASSERT(logger, md->digest_roof < elemsof(md->digest)) causes the daemon to abort. No remote code execution is possible. Any configuration that allows IKEv2 connections that do not set fragmentation=no are vulnerable. IKEv1 is not affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
4.6 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
Credits
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CVE-2024-3652 (GCVE-0-2024-3652)
Vulnerability from cvelistv5 – Published: 2024-04-11 01:32 – Updated: 2026-02-27 15:19
VLAI
EPSS
VEX
Title
IKEv1 default AH/ESP responder can cause libreswan to abort and restart
Summary
The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- IKEv1 with default AH/ESP configuration can cause libreswan to abort and restart
- CWE-404 - Improper Resource Shutdown or Release
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2024-3652 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2024/04/18/2 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project (www.libreswan.org) | libreswan |
Affected:
3.22 , ≤ 4.14
(semver)
Unaffected: 5.0 |
Date Public
2024-04-12 21:00
Credits
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CVE-2023-38710 (GCVE-0-2023-38710)
Vulnerability from cvelistv5 – Published: 2023-08-25 00:00 – Updated: 2024-11-26 21:53
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
2 references
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CVE-2023-38712 (GCVE-0-2023-38712)
Vulnerability from cvelistv5 – Published: 2023-08-25 00:00 – Updated: 2024-08-02 17:46
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
2 references
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CVE-2023-38711 (GCVE-0-2023-38711)
Vulnerability from cvelistv5 – Published: 2023-08-25 00:00 – Updated: 2024-08-02 17:46
VLAI
EPSS
VEX
Summary
An issue was discovered in Libreswan before 4.12. When an IKEv1 Quick Mode connection configured with ID_IPV4_ADDR or ID_IPV6_ADDR receives an IDcr payload with ID_FQDN, a NULL pointer dereference causes a crash and restart of the pluto daemon. NOTE: the earliest affected version is 4.6.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
Assigner
References
2 references
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CVE-2023-30570 (GCVE-0-2023-30570)
Vulnerability from cvelistv5 – Published: 2023-05-28 00:00 – Updated: 2025-01-14 18:14
VLAI
EPSS
VEX
Summary
pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticated IKEv1 Aggressive Mode packets. The earliest affected version is 3.28.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
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CVE-2023-2295 (GCVE-0-2023-2295)
Vulnerability from cvelistv5 – Published: 2023-05-17 00:00 – Updated: 2025-01-22 18:25
VLAI
EPSS
VEX
Summary
A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - - Uncontrolled Resource Consumption
Assigner
References
Impacted products
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CVE-2023-23009 (GCVE-0-2023-23009)
Vulnerability from cvelistv5 – Published: 2023-02-21 00:00 – Updated: 2025-03-17 17:02
VLAI
EPSS
VEX
Summary
Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/libreswan/libreswan/issues/954 | |
| https://www.debian.org/security/2023/dsa-5368 | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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CVE-2022-23094 (GCVE-0-2022-23094)
Vulnerability from cvelistv5 – Published: 2022-01-15 01:37 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
Libreswan 4.2 through 4.5 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted IKEv1 packet because pluto/ikev1.c wrongly expects that a state object exists. This is fixed in 4.6.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2022-23094 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/issues/585 | x_refsource_MISC |
| https://www.debian.org/security/2022/dsa-5048 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
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CVE-2020-1763 (GCVE-0-2020-1763)
Vulnerability from cvelistv5 – Published: 2020-05-12 13:41 – Updated: 2024-08-04 06:46
VLAI
EPSS
VEX
Summary
An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.
Severity
7.5 (High)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2020-1763/CVE-… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=1813329 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/commit/471… | x_refsource_CONFIRM |
| https://www.debian.org/security/2020/dsa-4684 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/202007-21 | vendor-advisoryx_refsource_GENTOO |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
from versions 3.27 till 3.31
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CVE-2019-10155 (GCVE-0-2019-10155)
Vulnerability from cvelistv5 – Published: 2019-06-12 13:51 – Updated: 2024-08-04 22:10
VLAI
EPSS
VEX
Summary
The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2019-10155/ | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3391 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
3.29
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CVE-2019-12312 (GCVE-0-2019-12312)
Vulnerability from cvelistv5 – Published: 2019-05-24 13:06 – Updated: 2024-08-04 23:17
VLAI
EPSS
VEX
Summary
In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by initiating an IKEv2 IKE_SA_INIT exchange, followed by a bogus INFORMATIONAL exchange instead of the normallly expected IKE_AUTH exchange. This affects send_v2N_spi_response_from_state() in programs/pluto/ikev2_send.c that will then trigger a NULL pointer dereference leading to a restart of libreswan.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.iwantacve.cn/index.php/archives/218/ | x_refsource_MISC |
| https://github.com/libreswan/libreswan/issues/246 | x_refsource_MISC |
| https://github.com/libreswan/libreswan/compare/9b… | x_refsource_MISC |
| https://libreswan.org/security/CVE-2019-12312/CVE… | x_refsource_CONFIRM |
| https://libreswan.org/security/CVE-2019-12312/lib… | x_refsource_CONFIRM |
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VAR-201401-0260
Vulnerability from variot - Updated: 2023-12-18 10:43Libreswan 3.7 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets that lack expected payloads. Supplementary information : CWE Vulnerability type by CWE-476: NULL Pointer Dereference (NULL Pointer dereference ) Has been identified. Openswan is a VPN implemented using ipsec technology. Versions prior to Libreswan 3.8 are vulnerable. Openswan is prone to a remote denial-of-service vulnerability due to a use-after-free error. An attacker may exploit this issue to crash the application, resulting in a denial-of-service condition. Note: This issue occurs only when Openswan is configured with 'nhelpers=0'. Openswan 2.3.0 to 2.6.36 are vulnerable
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