SB2011031501 - Permissions, Privileges, and Access Controls in libvirt

Description

This security bulletin contains information about 1 security vulnerability.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-1146)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

libvirt.c in the API in Red Hat libvirt 0.8.8 does not properly restrict operations in a read-only connection, which allows remote attackers to cause a denial of service (host OS crash) or possibly execute arbitrary code via a (1) virNodeDeviceDettach, (2) virNodeDeviceReset, (3) virDomainRevertToSnapshot, (4) virDomainSnapshotDelete, (5) virNodeDeviceReAttach, or (6) virConnectDomainXMLToNative call, a different vulnerability than CVE-2008-5086.

Remediation

Install update from vendor's website.

References

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=617773
• http://libvirt.org/git/?p=libvirt.git;a=commit;h=71753cb7f7a16ff800381c0b5ee4e99eea92fed3
• http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056209.html
• http://lists.opensuse.org/opensuse-updates/2011-04/msg00022.html
• http://openwall.com/lists/oss-security/2011/03/09/3
• http://openwall.com/lists/oss-security/2011/03/10/5
• http://secunia.com/advisories/43670
• http://secunia.com/advisories/43780
• http://secunia.com/advisories/43897
• http://secunia.com/advisories/43917
• http://secunia.com/advisories/44069
• http://www.debian.org/security/2011/dsa-2194
• http://www.redhat.com/support/errata/RHSA-2011-0391.html
• http://www.securityfocus.com/bid/46820
• http://www.securitytracker.com/id?1025262
• http://www.ubuntu.com/usn/USN-1094-1
• http://www.vupen.com/english/advisories/2011/0694
• http://www.vupen.com/english/advisories/2011/0700
• http://www.vupen.com/english/advisories/2011/0794
• http://www.vupen.com/english/advisories/2011/0805
• https://bugzilla.novell.com/show_bug.cgi?id=678406
• https://bugzilla.redhat.com/show_bug.cgi?id=683650
• https://exchange.xforce.ibmcloud.com/vulnerabilities/66012