CVE-2020-35652

Public Exploit

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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.11%

Vendor Advisory asterisk.org Vendor Advisory asterisk.org Vendor Advisory asterisk.org Vendor Advisory asterisk.org

Affected: n/a n/a

References

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

Frequently Asked Questions

What is the severity of CVE-2020-35652?: CVE-2020-35652 has been scored as a medium severity vulnerability.
How to fix CVE-2020-35652?: To fix CVE-2020-35652, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-35652 being actively exploited in the wild?: It is possible that CVE-2020-35652 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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