SB20210120109 - Heap-based buffer overflow in dnsmasq (Alpine package)
Published: January 20, 2021
Security Bulletin ID
SB20210120109
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) Heap-based buffer overflow (CVE-ID: CVE-2020-25687)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in rfc1035.c:extract_name(). A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.