SB2012120604 - Stack-based buffer overflow in libproxy (Alpine package)
Published: December 6, 2012
Security Bulletin ID
SB2012120604
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) Stack-based buffer overflow (CVE-ID: CVE-2012-4504)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the url::get_pac function in url.cpp when processing a large proxy.pac file. A remote unauthenticated attacker can trigger stack-based buffer overflow 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=ce21b58fb0d0d72355d617cafb5ad313f797f1ab
- https://git.alpinelinux.org/aports/commit/?id=d043b9a3153b51e86ca7aa15dad872c28bb094d0
- https://git.alpinelinux.org/aports/commit/?id=02ce8a55c740b8a702d035d196a65e4a03725db0
- https://git.alpinelinux.org/aports/commit/?id=2ab6001862262b6187a7da9694daca22f647d05d