SB2019012521 - Double Free in patch (Alpine package)
Published: January 25, 2019
Security Bulletin ID
SB2019012521
Severity
Medium
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) Double Free (CVE-ID: CVE-2018-6952)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing untrusted input within the another_hunk() function in pch.c. A remote attacker can create a specially crafted file, trick the victim into using in with the affected application, trigger a double free error 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=a7c5a8cafae8eb123b5026d0c83f1af99caac728
- https://git.alpinelinux.org/aports/commit/?id=f1460ec84b8cffa5d8fa79602ad97642452e5e5c
- https://git.alpinelinux.org/aports/commit/?id=38b6dd1c340446b8eb31aefaf5396ba65ca94369
- https://git.alpinelinux.org/aports/commit/?id=858c1e50bc7b69a652bedc684cf06dd025afeeab
- https://git.alpinelinux.org/aports/commit/?id=88e814fbbdb9a9a335964ae6dac9caa730df1cbf
- https://git.alpinelinux.org/aports/commit/?id=49d0c3b8bdfe17d2b541938002f02c38e5c3855a