PT-2015-4554 · Xen · Xen

Julien Grall · Published 2015-02-16 · Updated 2018-10-30 · CVE-2015-0268

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Xen versions 4.5.x

Description The issue allows local guest users to cause a denial of service, resulting in a host crash, by writing an invalid value to the GICD.SGIR register. This occurs when the vgic v2 to sgi function in arch/arm/vgic-v2.c is used on ARM hardware with general interrupt controller (GIC) version 2.

Recommendations For Xen version 4.5.x, consider restricting access to the vgic v2 to sgi function in arch/arm/vgic-v2.c to prevent local guest users from writing invalid values to the GICD.SGIR register until a patch is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2015-0268

MGASA-2016-0098

Affected Products

Xen

References · 57

• http://xenbits.xen.org/xsa/advisory-117.html · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2016-0098 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-0268 · Security Note
• https://advisories.mageia.org/MGASA-2016-0098.html · Security Note
• http://xenbits.xen.org/xsa/advisory-118.html · Note
• https://bugs.mageia.org/show_bug.cgi?id=16956 · Note
• http://xenbits.xen.org/xsa/advisory-136.html · Note
• http://xenbits.xen.org/xsa/advisory-125.html · Note
• http://xenproject.org/downloads/xen-archives/xen-45-series/xen-452.html · Note
• http://xenbits.xen.org/xsa/advisory-164.html · Note
• http://xenbits.xen.org/xsa/advisory-159.html · Note
• http://xenbits.xen.org/xsa/advisory-130.html · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/100868 · Note
• http://xenbits.xen.org/xsa/advisory-167.html · Note
• http://xenbits.xen.org/xsa/advisory-170.html · Note