Permissions, Privileges, and Access Controls in libvirt

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU45225

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2011-1146

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libvirt: 0.8.8

CPE2.3

• cpe:2.3:a:libvirt_org:libvirt:0.8.8:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.