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Status published
Medium
CVE-2021-31878
An issue was discovered in PJSIP in Asterisk before 16.19.1...
Vulnerability Description
An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://seclists.org/fulldisclosure/2021/Jul/48
- http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html
- http://downloads.asterisk.org/pub/security/AST-2021-007.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29381
- https://downloads.digium.com/pub/security/AST-2021-007.html
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Affected Vendor
digium
View all reports →Affected Software
asterisk
Vulnerable Versions:
16.17.0, 16.18.0, 16.19.0, 18.3.0, 18.4.0, 18.5.0
Timeline
Official Publish:
July 27th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.