CVE-2012-4561

Publication date 20 November 2012

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free “an invalid pointer on an error path,” which might allow remote attackers to cause a denial of service (crash) via unspecified vectors.

Status

No maintained releases are affected by this CVE.

Package Ubuntu Release Status
libssh 12.10 quantal
Fixed 0.5.2-1ubuntu0.12.10.1
12.04 LTS precise
Fixed 0.5.2-1ubuntu0.12.04.1
11.10 oneiric
Fixed 0.5.2-1ubuntu0.11.10.1
10.04 LTS lucid
Fixed 0.4.2-1ubuntu1.1
8.04 LTS hardy Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libssh

References

Related Ubuntu Security Notices (USN)

    • USN-1640-1
    • libssh vulnerabilities
    • 26 November 2012

Other references