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…
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 6.9 MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
- EPSS
- 0.36% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- citrix/xenserver · xen/xen
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://secunia.com/advisories/50472Vendor Advisory
- http://secunia.com/advisories/50530Vendor Advisory
- http://support.citrix.com/article/CTX134708Patch, Vendor Advisory
- http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
- http://www.openwall.com/lists/oss-security/2012/09/05/11
- http://www.securityfocus.com/bid/55411
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
- http://secunia.com/advisories/50472Vendor Advisory
- http://secunia.com/advisories/50530Vendor Advisory
- http://support.citrix.com/article/CTX134708Patch, Vendor Advisory
- http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
- http://www.openwall.com/lists/oss-security/2012/09/05/11
- http://www.securityfocus.com/bid/55411
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.