NULL pointer dereference in Xen

1) NULL pointer dereference

EUVDB-ID: #VU32743

Risk: High

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

CVE-ID: CVE-2012-3497

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a NULL client id.

Mitigation

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

Vulnerable software versions

Xen: 4.24

CPE2.3

• cpe:2.3:a:xen_project:xen:4.24:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html
https://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html
https://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
https://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
https://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
https://lists.xen.org/archives/html/xen-announce/2012-09/msg00006.html
https://osvdb.org/85199
https://secunia.com/advisories/50472
https://secunia.com/advisories/51324
https://secunia.com/advisories/51352
https://secunia.com/advisories/51413
https://secunia.com/advisories/55082
https://security.gentoo.org/glsa/glsa-201309-24.xml
https://wiki.xen.org/wiki/Security_Announcements#XSA-15_multiple_TMEM_hypercall_vulnerabilities
https://www.openwall.com/lists/oss-security/2012/09/05/8
https://www.securityfocus.com/bid/55410
https://www.securitytracker.com/id?1027482
https://exchange.xforce.ibmcloud.com/vulnerabilities/78268
https://security.gentoo.org/glsa/201604-03

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.