Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libvirt | 0.9.1-2 | — |
| Debian 13 | libvirt | 0.9.1-2 | — |
| Debian 12 | libvirt | 0.9.1-2 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=709775
- http://libvirt.org/news.html
- https://bugzilla.redhat.com/show_bug.cgi?id=709769
- openSUSE-SU-2011:0643 vendor-advisory
- FEDORA-2011-9091 vendor-advisory
- [libvirt] 20110531 [PATCH] security: plug regression introduced in disk probe logic mailing-list
- USN-1152-1 vendor-advisory
- http://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-2178.html