rhsa-2023_3839
Vulnerability from csaf_redhat
Published
2023-06-27 15:19
Modified
2024-11-06 03:14
Summary
Red Hat Security Advisory: libssh security update
Notes
Topic
An update for libssh is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.
Security Fix(es):
* libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667)
* libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for libssh is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": "libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.\n\nSecurity Fix(es):\n\n* libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667)\n\n* libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:3839", "url": "https://access.redhat.com/errata/RHSA-2023:3839" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "2182199", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2182199" }, { "category": "external", "summary": "2189736", 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This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.", "title": "Vulnerability description" }, { "category": "summary", "text": "libssh: authorization bypass in pki_verify_data_signature", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.aarch64", "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.i686", "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.ppc64le", "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.s390x", "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.src", "AppStream-8.8.0.Z.MAIN.EUS:libssh-0:0.9.6-10.el8_8.x86_64", "AppStream-8.8.0.Z.MAIN.EUS:libssh-config-0:0.9.6-10.el8_8.noarch", 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.