Configuration in Xen - CVE-2012-3496
Published: November 23, 2012 / Updated: July 28, 2020
Vulnerability identifier: #VU32742
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-3496
CWE-ID: CWE-16
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.
XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand.
Affected software
Xen
Gentoo Linux
SUSE Linux
xen (Alpine package)
app-emulation/xen
app-emulation/xen-pvgrub
app-emulation/xen-tools
Gentoo Linux
SUSE Linux
xen (Alpine package)
app-emulation/xen
app-emulation/xen-pvgrub
app-emulation/xen-tools
How to mitigate CVE-2012-3496
Install update from vendor's website.
xen (Alpine package) - update to 4.1.3-r1
app-emulation/xen - update to 4.2.2-r1
app-emulation/xen-pvgrub - update to 4.2.2-r1
app-emulation/xen-tools - update to 4.2.2-r3
app-emulation/xen - update to 4.2.2-r1
app-emulation/xen-pvgrub - update to 4.2.2-r1
app-emulation/xen-tools - update to 4.2.2-r3
External References
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
- http://lists.xen.org/archives/html/xen-announce/2012-09/msg00002.html
- http://secunia.com/advisories/50472
- http://secunia.com/advisories/50530
- http://secunia.com/advisories/51413
- http://secunia.com/advisories/55082
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://securitytracker.com/id?1027481
- http://support.citrix.com/article/CTX134708
- http://wiki.xen.org/wiki/Security_Announcements#XSA-14_XENMEM_populate_physmap_DoS_vulnerability
- http://www.debian.org/security/2012/dsa-2544
- http://www.openwall.com/lists/oss-security/2012/09/05/7
- http://www.osvdb.org/85200
- http://www.securityfocus.com/bid/55412
- https://bugzilla.redhat.com/show_bug.cgi?id=854590
- https://exchange.xforce.ibmcloud.com/vulnerabilities/78267
- https://security.gentoo.org/glsa/201604-03