CVE-2020-35652 Information

Description

An issue was discovered in res_pjsip_diversion.c in Sangoma Asterisk before 13.38.0 14.x through 16.x before 16.15.0 17.x before 17.9.0 and 18.x before 18.1.0. A crash can occur when a SIP message is received with a History-Info header that contains a tel-uri or when a SIP 181 response is received that contains a tel-uri in the Diversion header.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

https://downloads.asterisk.org/pub/security/AST-2020-003.html https://downloads.asterisk.org/pub/security/AST-2020-004.html https://issues.asterisk.org/jira/browse/ASTERISK-29191 https://issues.asterisk.org/jira/browse/ASTERISK-29219

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5