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Debian Security Advisory DSA 3309-1 (tidy - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Fernando Muoz discovered that invalid HTML input passed to tidy, an HTML syntax checker and reformatter, could trigger a buffer overflow. This could allow remote attackers to cause a denial of service (crash) or potentially execute arbitrary code. Geoff McLane also discovered that a similar issue could trigger an integer overflow, leading to a memory allocation of 4GB. This could allow remote attackers to cause a denial of service by saturating the target's memory.
Affected Software
Affected Software
tidy on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (wheezy), these problems have been fixed in version 20091223cvs-1.2+deb7u1. For the stable distribution (jessie), these problems have been fixed in version 20091223cvs-1.4+deb8u1. For the unstable distribution (sid), these problems will be fixed soon. We recommend that you upgrade your tidy packages.