SB2012072528 - Off-by-one in libexif (Alpine package)
Published: July 25, 2012
Security Bulletin ID
SB2012072528
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Off-by-one (CVE-ID: CVE-2012-2840)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to an off-by-one error in the exif_convert_utf16_to_utf8 function in exif-entry.c in the EXIF Tag Parsing Library. A remote attacker can trigger an off-by-one error via crafted EXIF tags in an image and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=5dea23e076ed7123339473f529d74d8a9362e7c6
- https://git.alpinelinux.org/aports/commit/?id=726529dabef044127d02831c4b26fa6c6fc9d5f5
- https://git.alpinelinux.org/aports/commit/?id=7d1a8137daa5c1f5312ad957dc1857027b8999df
- https://git.alpinelinux.org/aports/commit/?id=9959b863135bbaa1251dbddfa038c9256e155702
- https://git.alpinelinux.org/aports/commit/?id=cc9c8ab403cd5dfa204be58c326dd98d0702d70c
- https://git.alpinelinux.org/aports/commit/?id=06c00380098485f50412c75cbffb75a9764ea549
- https://git.alpinelinux.org/aports/commit/?id=0945eb55f2b2645eda75587579421dcbb93d7006
- https://git.alpinelinux.org/aports/commit/?id=b8e5bb1c9488b158a055c14fb1b78e087cc14e85