Input validation error in libvirt - CVE-2011-2178
Published: August 10, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44819
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-2178
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: libvirt.org
Affected software:
libvirt
libvirt
Detailed vulnerability description
The vulnerability allows a local #AU# to gain access to sensitive information.
The virSecurityManagerGetPrivateData function in security/security_manager.c in libvirt 0.8.8 through 0.9.1 uses the wrong argument for a sizeof call, which causes incorrect processing of "security manager private data" that "reopens disk probing" and might allow guest OS users to read arbitrary files on the host OS. NOTE: this vulnerability exists because of a CVE-2010-2238 regression.
How to mitigate CVE-2011-2178
Install update from vendor's website.
Sources
- http://libvirt.org/news.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062515.html
- http://lists.opensuse.org/opensuse-updates/2011-06/msg00030.html
- http://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-2178.html
- http://www.ubuntu.com/usn/USN-1152-1
- https://bugzilla.redhat.com/show_bug.cgi?id=709769
- https://bugzilla.redhat.com/show_bug.cgi?id=709775
- https://www.redhat.com/archives/libvir-list/2011-May/msg01935.html