Vulnerability Details : 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2012-3516
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 25 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-3516
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST |
CWE ids for CVE-2012-3516
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Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-3516
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http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
Security Announcements (Historical) - Xen
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http://www.securityfocus.com/bid/55411
Xen 'GNTTABOP_swap_grant_ref' CVE-2012-3516 Denial of Service Vulnerability
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http://www.openwall.com/lists/oss-security/2012/09/05/11
oss-security - Xen Security Advisory 18 (CVE-2012-3516) - grant table entry swaps have inadequate bounds checking
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
[security-announce] SUSE-SU-2012:1133-1: important: Security update for
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http://support.citrix.com/article/CTX134708
Citrix XenServer Multiple Security UpdatesPatch;Vendor Advisory
Products affected by CVE-2012-3516
- cpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*