Unrated severityNVD Advisory· Published Feb 18, 2021· Updated Aug 3, 2024
CVE-2021-26906
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Digium/Asteriskdescription
- Range: through 16.8-cert5
Patches
Vulnerability mechanics
References
5- packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.htmlmitrex_refsource_MISC
- seclists.org/fulldisclosure/2021/Feb/61mitremailing-listx_refsource_FULLDISC
- downloads.asterisk.org/pub/security/mitrex_refsource_MISC
- downloads.asterisk.org/pub/security/AST-2021-005.htmlmitrex_refsource_CONFIRM
- issues.asterisk.org/jira/browse/ASTERISK-29196mitrex_refsource_CONFIRM
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