CVE-2021-26906

Name
CVE-2021-26906
Description
An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
Issue Tracking https://issues.asterisk.org/jira/browse/ASTERISK-29196
Vendor Advisory https://downloads.asterisk.org/pub/security/
Vendor Advisory https://downloads.asterisk.org/pub/security/AST-2021-005.html
Mailing List http://seclists.org/fulldisclosure/2021/Feb/61
Third Party Advisory http://packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* asterisk >= 13.0.0 < 13.38.2
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* asterisk >= 16.0.0 < 16.16.1
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* asterisk >= 17.0.0 < 17.9.2
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* asterisk >= 18.0 < 18.2.1
cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:* certified_asterisk == None == 16.8

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
asterisk 3.10-main 16.3.0-r3 Timo Teras <timo.teras@iki.fi> possibly vulnerable
asterisk 3.11-main 16.6.2-r1 Timo Teras <timo.teras@iki.fi> possibly vulnerable