CVE-2013-6630
libjpeg: information leak (read of uninitialized memory)
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · November 12, 2013
Updated · January 29, 2026
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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N
CWE-456 · Missing Initialization of a Variable