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Debian Security Advisory DSA-3898-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
June 25, 2017 https://www.debian.org/security/faq
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Package : expat
CVE ID : CVE-2016-9063 CVE-2017-9233

Multiple vulnerabilities have been discovered in Expat, an XML parsing C
library. The Common Vulnerabilities and Exposures project identifies the
following problems:


CVE-2016-9063

Gustavo Grieco discovered an integer overflow flaw during parsing of
XML. An attacker can take advantage of this flaw to cause a denial
of service against an application using the Expat library.

CVE-2017-9233

Rhodri James discovered an infinite loop vulnerability within the
entityValueInitProcessor() function while parsing malformed XML
in an external entity. An attacker can take advantage of this
flaw to cause a denial of service against an application using
the Expat library.

For the oldstable distribution (jessie), these problems have been fixed
in version 2.1.0-6+deb8u4.

For the stable distribution (stretch), these problems have been fixed in
version 2.2.0-2+deb9u1. For the stable distribution (stretch),
CVE-2016-9063 was already fixed before the initial release.

For the testing distribution (buster), these problems have been fixed
in version 2.2.1-1 or earlier version.

For the unstable distribution (sid), these problems have been fixed in
version 2.2.1-1 or earlier version.

We recommend that you upgrade your expat 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/