#VU41573 Input validation error in Xen and Opensuse - CVE-2014-3967

Vulnerability identifier: #VU41573

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-3967

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software
Opensuse
Operating systems & Components / Operating system

Vendor: Xen Project
SUSE

Description

The vulnerability allows local HVM guest administrators to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and crash) via unspecified vectors.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Xen: 4.2.0 - 4.4.0

Opensuse: 4.2.0 - 13.1

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134710.html
https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134739.html
https://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html
https://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html
https://www.openwall.com/lists/oss-security/2014/06/04/13
https://www.securityfocus.com/bid/67794
https://www.securitytracker.com/id/1030322
https://xenbits.xen.org/xsa/advisory-96.html
https://security.gentoo.org/glsa/201504-04

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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