Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-31878

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.

Published

2021-07-30T14:15:16.690

Last Modified

2024-11-21T06:06:24.867

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-617

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	digium	asterisk	16.17.0	Yes
Application	digium	asterisk	16.18.0	Yes
Application	digium	asterisk	16.19.0	Yes
Application	digium	asterisk	18.3.0	Yes
Application	digium	asterisk	18.4.0	Yes
Application	digium	asterisk	18.5.0	Yes

References

http://downloads.asterisk.org/pub/security/AST-2021-007.html Patch, Vendor Advisory ([email protected])
http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html Patch, Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2021/Jul/48 Mailing List, Patch, Third Party Advisory ([email protected])
https://downloads.digium.com/pub/security/AST-2021-007.html Patch, Vendor Advisory ([email protected])
https://issues.asterisk.org/jira/browse/ASTERISK-29381 Exploit, Issue Tracking, Vendor Advisory ([email protected])
http://downloads.asterisk.org/pub/security/AST-2021-007.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html Patch, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Jul/48 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://downloads.digium.com/pub/security/AST-2021-007.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://issues.asterisk.org/jira/browse/ASTERISK-29381 Exploit, Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)