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Debian Security Advisory DSA 3087-1 (qemu - security update)
Information
Severity
Severity
Medium
Family
Family
Debian Local Security Checks
CVSSv2 Base
CVSSv2 Base
4.6
CVSSv2 Vector
CVSSv2 Vector
AV:L/AC:L/Au:N/C:P/I:P/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
9 years ago
Modified
Modified
2 years ago
Summary
Paolo Bonzini of Red Hat discovered that the blit region checks were insufficient in the Cirrus VGA emulator in qemu, a fast processor emulator. A privileged guest user could use this flaw to write into qemu address space on the host, potentially escalating their privileges to those of the qemu host process.
Affected Software
Affected Software
qemu on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (wheezy), this problem has been fixed in version 1.1.2+dfsg-6a+deb7u6. We recommend that you upgrade your qemu packages.