4.7 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
27.1%
Debian Security Advisory DSA-2544-1 [email protected]
http://www.debian.org/security/ Raphael Geissert
September 08, 2012 http://www.debian.org/security/faq
Package : xen
Vulnerability : denial of service
Problem type : local
Debian-specific: no
CVE ID : CVE-2012-3494 CVE-2012-3496
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.
We recommend that you upgrade your xen packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 6 | i386 | libxen-dev | < 4.0.1-5.4 | libxen-dev_4.0.1-5.4_i386.deb |
Debian | 6 | all | xen-docs-4.0 | < 4.0.1-5.4 | xen-docs-4.0_4.0.1-5.4_all.deb |
Debian | 6 | i386 | xen-utils-4.0 | < 4.0.1-5.4 | xen-utils-4.0_4.0.1-5.4_i386.deb |
Debian | 6 | amd64 | libxen-dev | < 4.0.1-5.4 | libxen-dev_4.0.1-5.4_amd64.deb |
Debian | 6 | all | xen | < 4.0.1-5.4 | xen_4.0.1-5.4_all.deb |
Debian | 6 | i386 | xenstore-utils | < 4.0.1-5.4 | xenstore-utils_4.0.1-5.4_i386.deb |
Debian | 6 | amd64 | xen-hypervisor-4.0-amd64 | < 4.0.1-5.4 | xen-hypervisor-4.0-amd64_4.0.1-5.4_amd64.deb |
Debian | 6 | amd64 | xen-utils-4.0 | < 4.0.1-5.4 | xen-utils-4.0_4.0.1-5.4_amd64.deb |
Debian | 6 | i386 | xen-hypervisor-4.0-i386 | < 4.0.1-5.4 | xen-hypervisor-4.0-i386_4.0.1-5.4_i386.deb |
Debian | 6 | i386 | libxenstore3.0 | < 4.0.1-5.4 | libxenstore3.0_4.0.1-5.4_i386.deb |