CVE-2012-3516

Severity

69%

Complexity

34%

Confidentiality

165%

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.

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.

CVSS 2.0 Base Score 6.9. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:C/I:C/A:C).

Overview

First reported 12 years ago

2012-11-23 20:55:00

Last updated 12 years ago

2013-02-01 04:49:00

Affected Software

Xen 4.2.0

4.2.0

References

SUSE-SU-2012:1133

50472

Vendor Advisory

50530

Vendor Advisory

http://support.citrix.com/article/CTX134708

Patch, Vendor Advisory

http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking

[oss-security] 20120905 Xen Security Advisory 18 (CVE-2012-3516) - grant table entry swaps have inadequate bounds checking

55411

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