CVE-2013-6630

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-11-19 · updated 2026-06-17
Weakness: CWE-189

Description

The get_dht function in jdmarker.c in libjpeg-turbo through 1.3.0, as used in Google Chrome before 31.0.1650.48 and other products, does not set all elements of a certain Huffman value array during the reading of segments that follow Define Huffman Table (DHT) JPEG markers, which allows remote attackers to obtain sensitive information from uninitialized memory locations via a crafted JPEG image.

Affected products

Google Chrome: through 31.0.1650.47; 31.0.1650.0, 31.0.1650.2, 31.0.1650.3, 31.0.1650.4, 31.0.1650.5, 31.0.1650.6 (+37)

References

http://advisories.mageia.org/MGASA-2013-0333.html
http://archives.neohapsis.com/archives/fulldisclosure/2013-11/0080.html
http://git.chromium.org/gitweb/?p=chromium/deps/libjpeg_turbo.git%3Ba=commit%3Bh=32cab49bd4cb1ce069a435fd75f9439c34ddc6f8
http://googlechromereleases.blogspot.com/2013/11/stable-channel-update.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/123437.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124108.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124257.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/125470.html
http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2013-12/msg00002.html
http://lists.opensuse.org/opensuse-updates/2013-12/msg00085.html

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