The virSecurityManagerSetProcessLabel function in libvirt 0.10.2.7, 1.0.5.5, and 1.1.1, when the domain has read an uid:gid label, does not properly set group memberships, which allows local users to gain privileges.

libvirt has been updated to the 1.0.5.6 stable release that fixes bugs and security issues :

  - Fix crash in remoteDispatchDomainMemoryStats.
    (CVE-2013-4296)

  - virBitmapParse out-of-bounds read access Libvirt on SLES     11 SP3 is not affected:. (CVE-2013-5651)

  - Add support for using 3-arg pkcheck syntax for process     (). (CVE-2013-4311)

  - security: provide supplemental groups even when parsing     label () Changes in this version:. (CVE-2013-4291)

  - virsh: fix change-media bug on disk block type

  - Include process start time when doing polkit checks

  - qemuDomainChangeGraphics: Check listen address change by     listen type

  - python: return dictionary without value in case of no     blockjob

  - virbitmap: Refactor virBitmapParse to avoid access     beyond bounds of array Also the following bug has been     fixed :

  - Fix retrieval of SRIOV VF info, which prevented using     some SRIOV virtual functions in guest domains with ''     (bnc#837329)

- Fix snapshot restore when VM has disabled usb support     (bz #1011520)

    - Rebased to version 1.0.5.6

    - Fix blockjobinfo python API (bz #999077)

    - CVE-2013-4311: Insecure polkit usage (bz #1009539, bz       #1005332)

    - CVE-2013-4296: Invalid free memory stats (bz #1006173,       bz #1009667)

    - CVE-2013-4291: Supplementary groups handling (bz       #1006509, bz #1006511)

    - CVE-2013-5651: virBitmapParse out-of-bounds (bz       #1006493)

    - Fix virsh change-media with block disk type (bz       #951192)

    - Fix changing VNC listen address (bz #1006697)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- Rebased to version 0.10.2.8

    - CVE-2013-4311: Insecure polkit usage (bz #1009539, bz       #1005332)

    - CVE-2013-4296: Invalid free memory stats (bz #1006173,       bz #1009667)

    - CVE-2013-4291: Supplementary groups handling (bz       #1006509, bz #1006511)

    - Fix LXC container creation if selinux disabled (bz       #977114)

    - Fix virsh change-media with block disk type (bz       #951192)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
70797	SuSE 11.3 Security Update : libvirt (SAT Patch Number 8421)	Nessus	SuSE Local Security Checks	medium
70279	Fedora 19 : libvirt-1.0.5.6-2.fc19 (2013-17618)	Nessus	Fedora Local Security Checks	medium
70235	Fedora 18 : libvirt-0.10.2.8-1.fc18 (2013-17305)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2013-4291

high

Tenable Plugins

medium

medium

medium