Debian Security Advisory
DSA-2577-1 libssh -- several vulnerabilities
- Date Reported:
- 01 Dec 2012
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2012-4559, CVE-2012-4561, CVE-2012-4562, CVE-2012-6063.
- More information:
Multiple vulnerabilities were discovered in libssh by Florian Weimer and Xi Wang:
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.