Debian: DSA-2577-1 Moderate: Libssh Remote Flaws and Denial of Service
debian
December 1, 2012
Multiple vulnerabilities were discovered in libssh by Florian Weimer and Xi Wang: CVE-2012-4559: multiple double free() flaws
Summary
CVE-2012-4559: multiple double free() flaws
CVE-2012-4561: multiple invalid free() flaws
CVE-2012-4562: multiple improper overflow checks
Those could lead to a denial of service by making an ssh client linked to
libssh crash, and maybe even arbitrary code execution.
For the stable distribution (squeeze), these problems have been fixed in
version 0.4.5-3+squeeze1.
For the testing distribution (wheezy), these problems have been fixed in
version 0.5.3-1.
For the unstable distribution (sid), these problems have been fixed in
version 0.5.3-1.
We recommend that you upgrade your libssh packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
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Package: libssh
CVE ID: CVE-2012-4559 CVE-2012-4561 CVE-2012-4562
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