SB2016052305 - Integer underflow in php7 (Alpine package)
Published: May 23, 2016
Security Bulletin ID
SB2016052305
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) Integer underflow (CVE-ID: CVE-2016-10166)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack and potentially compromise vulnerable system.The vulnerability exists due to integer underflow when decrementing the "u" variable in _gdContributionsAlloc() function in gd_interpolation.c. A remote attacker create a specially crafted image file, trigger memory corruption and crash the affected application or execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=195c4dea4525cc85ef4ab449d2c739b6b5081b48
- https://git.alpinelinux.org/aports/commit/?id=d42b915a2245405763bb485ededfbdb01393f109
- https://git.alpinelinux.org/aports/commit/?id=1b8dc16a8d83cea1a0638ca75a327f234049e6fd
- https://git.alpinelinux.org/aports/commit/?id=08114de6e0da35db211984405c8d9043e426ea58
- https://git.alpinelinux.org/aports/commit/?id=87a5a2c48f6c4e068c31ba4ba9665d05a4a88682