drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in Xen
Name: |
Zwei Probleme in Xen |
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ID: |
DSA-2544-1 |
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Distribution: |
Debian |
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Plattformen: |
Debian sid, Debian squeeze |
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Datum: |
So, 9. September 2012, 09:36 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3494
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3496 |
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Applikationen: |
Xen |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
- ------------------------------------------------------------------------- Debian Security Advisory DSA-2544-1 security@debian.org 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: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux)
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