Vulnerability identifier: #VU42104

Vulnerability risk: Medium

CVSSv3.1: 5.4 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:C]

CVE-ID: CVE-2014-1642

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Xen
Server applications / Virtualization software

Vendor: Xen Project

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free. A local guest administrators can cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

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

Vulnerable software versions

Xen: 4.2.0 - 4.3.1

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127580.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127607.html
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
http://osvdb.org/102406
http://secunia.com/advisories/56557
http://security.gentoo.org/glsa/glsa-201407-03.xml
http://www.openwall.com/lists/oss-security/2014/01/23/4
http://www.securityfocus.com/bid/65097
http://www.securitytracker.com/id/1029679
http://xenbits.xen.org/xsa/advisory-83.html
http://exchange.xforce.ibmcloud.com/vulnerabilities/90649

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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