CVE-2013-2076
Published: 28 August 2013
Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.
Notes
Author | Note |
---|---|
seth-arnold | Only vulnerable if on specific AMD AMD64 CPUs with xsave hypervisor command line option |
mdeslaur | This is XSA-52 |
Priority
Status
Package | Release | Status |
---|---|---|
xen Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Released
(4.1.2-2ubuntu2.9)
|
|
quantal |
Released
(4.1.3-3ubuntu1.6)
|
|
raring |
Released
(4.2.1-0ubuntu3.2)
|
|
upstream |
Needed
|
|
Patches: upstream: http://lists.xen.org/archives/html/xen-announce/2013-06/binBidYFYTpbK.bin upstream: http://lists.xen.org/archives/html/xen-announce/2013-06/binRis9tlvy4y.bin |
||
Binaries built from this source package are in Universe and so are supported by the community. | ||
xen-3.3 Launchpad, Ubuntu, Debian |
lucid |
Not vulnerable
|
precise |
Does not exist
|
|
quantal |
Does not exist
|
|
raring |
Does not exist
|
|
upstream |
Ignored
(end of life)
|