CVE-2021-26906

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.

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

Configuration 1

cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc1:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc2:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc3:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc4:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:* cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:* cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*

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Published : 2021-02-18 08:15

Updated : 2021-02-24 05:03

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NVD link : CVE-2021-26906

Mitre link : CVE-2021-26906

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CWE-404