#VU42406 Permissions, Privileges, and Access Controls in libvirt - CVE-2013-4401

Vulnerability identifier: #VU42406

Vulnerability risk: Medium

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

CVE-ID: CVE-2013-4401

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor: libvirt.org

Description

The vulnerability allows a remote #AU# to execute arbitrary code.

The virConnectDomainXMLToNative API function in libvirt 1.1.0 through 1.1.3 checks for the connect:read permission instead of the connect:write permission, which allows attackers to gain domain:write privileges and execute Qemu binaries via crafted XML. NOTE: some of these details are obtained from third party information.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libvirt: 1.1.0 - 1.1.3

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External links
https://libvirt.org/git/?p=libvirt.git;a=commit;h=57687fd6bf7f6e1b3662c52f3f26c06ab19dc96c
https://secunia.com/advisories/55210
https://secunia.com/advisories/60895
https://security.gentoo.org/glsa/glsa-201412-04.xml
https://wiki.libvirt.org/page/Maintenance_Releases
https://www.securitytracker.com/id/1029241
https://www.ubuntu.com/usn/USN-2026-1
https://bugzilla.redhat.com/show_bug.cgi?id=1015259

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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