Vulnerability Monitor

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CVE-2020-35776

A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.

Published

2021-02-18T20:15:12.447

Last Modified

2024-11-21T05:28:03.670

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

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

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-120

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	digium	asterisk	≤ 13.38.1	Yes
Application	digium	asterisk	≤ 16.15.1	Yes
Application	digium	asterisk	≤ 17.9.1	Yes
Application	digium	asterisk	≤ 18.1.1	Yes

References

http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html Patch, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2021/Feb/57 Mailing List, Third Party Advisory ([email protected])
https://downloads.asterisk.org/pub/security/AST-2021-001.html Vendor Advisory ([email protected])
https://issues.asterisk.org/ Issue Tracking, Vendor Advisory ([email protected])
https://issues.asterisk.org/jira/browse/ASTERISK-29227 Exploit, Issue Tracking, Patch, Vendor Advisory ([email protected])
http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2021/Feb/57 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://downloads.asterisk.org/pub/security/AST-2021-001.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://issues.asterisk.org/ Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://issues.asterisk.org/jira/browse/ASTERISK-29227 Exploit, Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)