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Asterisk Multiple DoS Vulnerabilities (AST-2020-003, AST-2020-004)
Information
Severity
Severity
Medium
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
6.8
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:S/C:N/I:N/A:C
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
Asterisk is prone to multiple denial of service vulnerabilities.
Insight
Insight
Multiple flaws exist in the res_pjsip_diversion module: - A crash can occur when a SIP message is received that has a History-Info header, which contains a tel-uri. - A crash can occur when a SIP 181 response is received that has a Diversion header, which contains a tel-uri.
Affected Software
Affected Software
Asterisk Open Source 13.38.0, 16.15.0, 17.9.0 and 18.1.0.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to Version 13.38.1, 16.15.1, 17.9.1, 18.1.1 or later.