Integer underflow in libexif - CVE-2012-2841

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Main Vulnerability Database Vulnerabilities #VU31848

Integer underflow in libexif - CVE-2012-2841

Published: July 26, 2020


Vulnerability identifier: #VU31848
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-2841
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow in the exif_entry_get_value function in exif-entry.c in the EXIF Tag Parsing Library. A remote attacker can create a specially crafted file and execute arbitrary code via vectors involving a crafted buffer-size parameter during the formatting of an EXIF tag, leading to a heap-based buffer overflow.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

libexif
Gentoo Linux
Amazon Linux AMI
SUSE Linux
Slackware Linux
libexif (Alpine package)

How to mitigate CVE-2012-2841

Install update from vendor's website.

libexif - update to 0.6.21
libexif (Alpine package) - update to 0.6.21-r0

External References

Related Security Bulletins