CVE-2021-31878

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

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

V2 Legend

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

07 Aug 2021, 02:05

Type Values Removed Values Added
CPE cpe:2.3:a:digium:asterisk:16.18.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:18.5.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:18.3.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:16.17.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:18.4.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:16.19.0:*:*:*:*:*:*:*
References (MISC) https://downloads.digium.com/pub/security/AST-2021-007.html - (MISC) https://downloads.digium.com/pub/security/AST-2021-007.html - Patch, Vendor Advisory
References (FULLDISC) http://seclists.org/fulldisclosure/2021/Jul/48 - (FULLDISC) http://seclists.org/fulldisclosure/2021/Jul/48 - Mailing List, Patch, Third Party Advisory
References (MISC) https://issues.asterisk.org/jira/browse/ASTERISK-29381 - (MISC) https://issues.asterisk.org/jira/browse/ASTERISK-29381 - Exploit, Issue Tracking, Vendor Advisory
References (MISC) http://downloads.asterisk.org/pub/security/AST-2021-007.html - (MISC) http://downloads.asterisk.org/pub/security/AST-2021-007.html - Patch, Vendor Advisory
References (MISC) http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html - (MISC) http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html - Patch, Third Party Advisory, VDB Entry
CVSS v2 : unknown
v3 : unknown 		v2 : 4.0
v3 : 6.5
CWE CWE-617

30 Jul 2021, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2021-07-30 14:15

Updated : 2023-12-10 13:55

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