SB2020090712 - Input validation error in bison (Alpine package)
Published: September 7, 2020
Security Bulletin ID
SB2020090712
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2020-24980)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in src/parse-gram.c in GNU bison when processing a double quote at the end of the string. A remote attacker can trick the victim to open a specially crafted file to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.