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Asterisk Multiple DoS Vulnerabilities (AST-2021-008, AST-2021-009)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Asterisk is prone to multiple denial of service (DoS) vulnerabilities.
Insight
Insight
The following vulnerabilities exist: - CVE-2021-32558: If the IAX2 channel driver receives a packet that contains an unsupported media format it can cause a crash to occur in Asterisk. - CVE-2021-32686: Depending on the timing, it's possible for Asterisk to crash when using a TLS connection if the underlying socket parent/listener gets destroyed during the handshake.
Affected Software
Affected Software
Asterisk Open Source 13.x, 16.x, 17.x, 18.x and 16.x Certified Asterisk.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 13.38.3, 16.19.1, 17.9.4, 18.5.1, 16.8-cert10 or later.