SB2018120423 - Out-of-bounds write in perl (Alpine package)
Published: December 4, 2018
Security Bulletin ID
SB2018120423
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) Out-of-bounds write (CVE-ID: CVE-2018-18312)
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow write during compilation. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
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=2347c5642490c5f7dc79c2205fff672b7bf5a3f6
- https://git.alpinelinux.org/aports/commit/?id=2db22e01ffdcff6cb673b0f5660cb911cff79bc1
- https://git.alpinelinux.org/aports/commit/?id=d5907c68b2341579983e3fc9a25ac4b67162c994
- https://git.alpinelinux.org/aports/commit/?id=f4e478f351ceedb178ec76b3b5ba2b2defdf99c8
- https://git.alpinelinux.org/aports/commit/?id=0bae63fd8d47db4b5bf4e1407c139f804fa62f4f
- https://git.alpinelinux.org/aports/commit/?id=13074bff64787b9251ec396b8ac6ecd18718d2a0
- https://git.alpinelinux.org/aports/commit/?id=17a345542d7049381a2bafa85893bda2cfc61358
- https://git.alpinelinux.org/aports/commit/?id=d64c1df53210ad5f3d6666da967b2628cf0eb172