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Test ID:1.3.6.1.4.1.25623.1.1.1.1.2023.5409
Category:Debian Local Security Checks
Title:Debian: Security Advisory (DSA-5409-1)
Summary:The remote host is missing an update for the Debian 'libssh' package(s) announced via the DSA-5409-1 advisory.
Description:Summary:
The remote host is missing an update for the Debian 'libssh' package(s) announced via the DSA-5409-1 advisory.

Vulnerability Insight:
Two security issues have been discovered in libssh, a tiny C SSH library:

CVE-2023-1667

Philip Turnbull discovered a NULL pointer dereference which could result in denial of service.

CVE-2023-2283

Kevin Backhouse discovered that pki_verify_data_signature() may fail to correctly validate authentication in memory pressure situations.

For the stable distribution (bullseye), these problems have been fixed in version 0.9.7-0+deb11u1.

We recommend that you upgrade your libssh packages.

For the detailed security status of libssh please refer to its security tracker page at: [link moved to references]

Affected Software/OS:
'libssh' package(s) on Debian 11.

Solution:
Please install the updated package(s).

CVSS Score:
6.4

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2023-1667
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/
https://security.gentoo.org/glsa/202312-05
http://www.libssh.org/security/advisories/CVE-2023-1667.txt
https://access.redhat.com/security/cve/CVE-2023-1667
https://bugzilla.redhat.com/show_bug.cgi?id=2182199
https://lists.debian.org/debian-lts-announce/2023/05/msg00029.html
Common Vulnerability Exposure (CVE) ID: CVE-2023-2283
http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html
https://access.redhat.com/security/cve/CVE-2023-2283
https://bugzilla.redhat.com/show_bug.cgi?id=2189736
https://www.libssh.org/security/advisories/CVE-2023-2283.txt
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