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Overview

Vulnerability Score 5.0 5.0
CVE Id CVE-2012-4561
Last Modified 26 Aug 2013 11:27:35
Published 30 Nov 2012 05:55:01
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE

CVE-2012-4561

Summary

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 cause a denial of service (crash) via unspecified vectors.

Vulnerable Systems

Application

  • Libssh 0.4.7

  • Libssh 0.4.8

  • Libssh 0.5.0

  • Libssh 0.5.1

  • Libssh 0.5.2


References

MISC - https://bugzilla.redhat.com/show_bug.cgi?id=871617

BID - 56604

MLIST - [oss-security] 20121120 libssh 0.5.3 release fixes multiple security issues

CONFIRM - http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/

UBUNTU - USN-1640-1

DEBIAN - DSA-2577

SUSE - openSUSE-SU-2012:1622

SUSE - openSUSE-SU-2012:1620

SUSE - openSUSE-SU-2013:0130

XF - libssh-multiple-dos(80220)

MANDRIVA - MDVSA-2012:175

FEDORA - FEDORA-2012-18677

FEDORA - FEDORA-2012-18610


Last Updated: 27 May 2016 10:49:52