Vulnerability Name: | CVE-2021-26906 (CCN-197032) | ||||||||||||
Assigned: | 2020-12-04 | ||||||||||||
Published: | 2020-12-04 | ||||||||||||
Updated: | 2021-02-24 | ||||||||||||
Summary: | 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. | ||||||||||||
CVSS v3 Severity: | 5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) 5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
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CVSS v2 Severity: | 4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
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Vulnerability Type: | CWE-404 | ||||||||||||
Vulnerability Consequences: | Denial of Service | ||||||||||||
References: | Source: MITRE Type: CNA CVE-2021-26906 Source: MISC Type: Third Party Advisory http://packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html Source: FULLDISC Type: Mailing List, Patch, Third Party Advisory 20210218 AST-2021-005: Remote Crash Vulnerability in PJSIP channel driver Source: MISC Type: Vendor Advisory https://downloads.asterisk.org/pub/security/ Source: CCN Type: Asterisk Project Security Advisory - AST-2021-005 Remote Crash Vulnerability in PJSIP channel driver Source: CONFIRM Type: Vendor Advisory https://downloads.asterisk.org/pub/security/AST-2021-005.html Source: XF Type: UNKNOWN asterisk-cve202126906-dos(197032) Source: CONFIRM Type: Issue Tracking, Patch, Vendor Advisory https://issues.asterisk.org/jira/browse/ASTERISK-29196 Source: CCN Type: WhiteSource Vulnerability Database CVE-2021-26906 | ||||||||||||
Vulnerable Configuration: | Configuration 1:![]() | ||||||||||||
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