Debian Security Advisory DSA 2544-1 (xen)

Published: 2012-09-15 08:24:09
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:M/Au:N/C:N/I:N/A:C

Technical Details:
Multiple denial of service vulnerabilities have been discovered in xen, an hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2012-3494: It was discovered that set_debugreg allows writes to reserved bits of the DR7 debug control register on amd64 (x86-64) paravirtualised guests, allowing a guest to crash the host. CVE-2012-3496: Matthew Daley discovered that XENMEM_populate_physmap, when called with the MEMF_populate_on_demand flag set, a BUG (detection routine) can be triggered if a translating paging mode is not being used, allowing a guest to crash the host. For the stable distribution (squeeze), these problems have been fixed in version 4.0.1-5.4. For the testing distribution (wheezy), these problems will be fixed soon. For the unstable distribution (sid), these problems have been fixed in version 4.1.3-2.

Recommendations:
We recommend that you upgrade your xen Linux Distribution Packages.

Summary:
The remote host is missing an update to xen announced via advisory DSA 2544-1.

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2012-3494
https://nvd.nist.gov/vuln/detail/CVE-2012-3496

References:

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202544-1

Severity
Medium
CVSS Score
4.7
Published
2012-09-15
Modified
2019-03-18
Category
Debian Local Security Checks

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