CVE-2012-3516
7 High
AI Score
Confidence
High
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
26.0%
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| citrix:xenserver | citrix xenserver | le | 6.0.2 |
| xen:xen | xen | eq | 4.2.0 |
References
lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
secunia.com/advisories/50472
secunia.com/advisories/50530
support.citrix.com/article/CTX134708
wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
www.openwall.com/lists/oss-security/2012/09/05/11
www.securityfocus.com/bid/55411
Related
7 High
AI Score
Confidence
High
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
26.0%