high
7.1
CWE
20
Advisory Published
CVE Published
Updated

CVE-2016-4449: Input Validation

First published: Mon May 23 2016(Updated: )

A vulnerability was found in the libxml2 library. The parser would fetch content of an external entity while not in validating mode. References: <a href="https://bugzilla.gnome.org/show_bug.cgi?id=761430">https://bugzilla.gnome.org/show_bug.cgi?id=761430</a> Upstream fix: <a href="https://git.gnome.org/browse/libxml2/commit/?id=b1d34de46a11323fccffa9fadeb33be670d602f5">https://git.gnome.org/browse/libxml2/commit/?id=b1d34de46a11323fccffa9fadeb33be670d602f5</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/libxml2
2.9.4+dfsg1-7+deb10u4
2.9.4+dfsg1-7+deb10u6
2.9.10+dfsg-6.7+deb11u4
2.9.14+dfsg-1.3~deb12u1
2.9.14+dfsg-1.3
Debian=8.0
Ubuntu=12.04
Ubuntu=14.04
Ubuntu=15.10
Ubuntu=16.04
libxml2-devel<=2.9.3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-4449?

    CVE-2016-4449 has a severity rating that suggests it can lead to potential denial of service attacks due to improper handling of external entities in the libxml2 parser.

  • How do I fix CVE-2016-4449?

    To fix CVE-2016-4449, upgrade to libxml2 versions 2.9.4+dfsg1-7+deb10u4 or higher for Debian and the corresponding patched versions for other distributions.

  • Which platforms are affected by CVE-2016-4449?

    CVE-2016-4449 affects Debian Linux versions 8.0, Ubuntu versions 12.04, 14.04, 15.10, and 16.04, as well as libxml2 versions up to 2.9.3.

  • What type of vulnerability is CVE-2016-4449?

    CVE-2016-4449 is an XML external entity (XXE) vulnerability that arises from improper parsing behavior in the libxml2 library.

  • Is CVE-2016-4449 a critical vulnerability?

    CVE-2016-4449 is not classified as critical but poses significant risk as it can be exploited for denial of service.

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