An issue was discovered in Asterisk 13.18.4 and older, 14.7.4 and older, 15.1.4 and older, and 13.18-cert1 and older. A select set of SIP messages create a dialog in Asterisk. Those SIP messages must contain a contact header. For those messages, if the header was not present and the PJSIP channel driver was used, Asterisk would crash. The severity of this vulnerability is somewhat mitigated if authentication is enabled. If authentication is enabled, a user would have to first be authorized before reaching the crash point.
                
            Metrics
Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: mitre
Published: 2017-12-23T00:00:00
Updated: 2024-08-05T21:06:49.280Z
Reserved: 2017-12-22T00:00:00
Link: CVE-2017-17850
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Deferred
Published: 2017-12-27T17:08:20.017
Modified: 2025-04-20T01:37:25.860
Link: CVE-2017-17850
 Redhat
                        Redhat
                    No data.