Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2012-3516

The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.

Published

2012-11-23T20:55:03.650

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	citrix	xenserver	≤ 6.0.2	Yes
Operating System	xen	xen	4.2.0	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html ([email protected])
http://secunia.com/advisories/50472 Vendor Advisory ([email protected])
http://secunia.com/advisories/50530 Vendor Advisory ([email protected])
http://support.citrix.com/article/CTX134708 Patch, Vendor Advisory ([email protected])
http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking ([email protected])
http://www.openwall.com/lists/oss-security/2012/09/05/11 ([email protected])
http://www.securityfocus.com/bid/55411 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/50472 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/50530 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.citrix.com/article/CTX134708 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/09/05/11 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/55411 (af854a3a-2127-422b-91ae-364da2661108)