SB2021022610 - Input validation error in asterisk (Alpine package)
Published: February 26, 2021
Security Bulletin ID
SB2021022610
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-2021-26712)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.
Remediation
Install update from vendor's website.