SB2019111124 - Stack-based buffer overflow in fribidi (Alpine package)
Published: November 11, 2019
Security Bulletin ID
SB2019111124
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) Stack-based buffer overflow (CVE-ID: CVE-2019-18397)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in GNU fribidi when processing a large number of unicode isolate directional characters. A remote 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=056e278147ebf0f3781926c395e533081eb8c0f9
- https://git.alpinelinux.org/aports/commit/?id=0cac76661fd3b286f052ef3d4343a5458b71b306
- https://git.alpinelinux.org/aports/commit/?id=e245657e6ddf7511c3bb512238a8b2fc8df56be3
- https://git.alpinelinux.org/aports/commit/?id=f49f79ef74f6410eadb866875ab2c2e95bd96ba8