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.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://downloads.asterisk.org/pub/security/AST-2021-007.html	Patch Vendor Advisory
http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html	Patch Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2021/Jul/48	Mailing List Patch Third Party Advisory
https://downloads.digium.com/pub/security/AST-2021-007.html	Patch Vendor Advisory
https://issues.asterisk.org/jira/browse/ASTERISK-29381	Exploit Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:digium:asterisk:16.17.0:::::::*
	cpe:2.3:a:digium:asterisk:16.18.0:::::::*
	cpe:2.3:a:digium:asterisk:16.19.0:::::::*
	cpe:2.3:a:digium:asterisk:18.3.0:::::::*
	cpe:2.3:a:digium:asterisk:18.4.0:::::::*
	cpe:2.3:a:digium:asterisk:18.5.0:::::::*

History

No history.

Information

Published : 2021-07-30 14:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-31878

Mitre link : CVE-2021-31878

CVE.ORG link : CVE-2021-31878

JSON object : View

Products Affected

digium

asterisk

CWE

CWE-617

Reachable Assertion

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