Access Restriction Bypass The advisory has been revoked - it doesn't affect any version of package xen (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU1204-XEN-644142
- published10 Sept 2020
- disclosed23 Nov 2012
Introduced: 23 Nov 2012
CVE-2012-3516 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2012-3516
- http://www.securityfocus.com/bid/55411
- http://support.citrix.com/article/CTX134708
- 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://secunia.com/advisories/50472
- http://secunia.com/advisories/50530
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html