An issue was discovered in Asterisk Open Source 13.12.x and 13.13.x before 13.13.1 and 14.x before 14.2.1. If an SDP offer or answer is received with the Opus codec and with the format parameters separated using a space the code responsible for parsing will recursively call itself until it crashes. This occurs as the code does not properly handle spaces separating the parameters. This does NOT require the endpoint to have Opus configured in Asterisk. This also does not require the endpoint to be authenticated. If guest is enabled for chan_sip or anonymous in chan_pjsip an SDP offer or answer is still processed and the crash occurs.
                
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Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: mitre
Published: 2016-12-12T21:00:00
Updated: 2024-08-06T03:07:31.584Z
Reserved: 2016-12-12T00:00:00
Link: CVE-2016-9937
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Deferred
Published: 2016-12-12T21:59:00.303
Modified: 2025-04-12T10:46:40.837
Link: CVE-2016-9937
 Redhat
                        Redhat
                    No data.