Fernando Muñoz 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.

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Debian Security Advisory DSA-3309-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                       Alessandro Ghedini
July 18, 2015                         https://www.debian.org/security/faq
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Package        : tidy
CVE ID         : CVE-2015-5522 CVE-2015-5523
Debian Bug     : 792571

Fernando Muñoz 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.

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.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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