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CVE-2021-31878

Published: Jul 27, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-617
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
2.4%
Top 17.9%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-617

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
AsteriskDigium, Inc.
On-prem
Communications / voip-telephony
n/an/a
asteriskdigiumCommunications
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
digium, inc.commercialUSCommunicationsaka digium, digium inc.
digiumcommercialUSCommunicationsaka digium, asterisk

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

http://downloads.asterisk.org/pub/security/AST-2021-007.html
downloads.asterisk.org
http://seclists.org/fulldisclosure/2021/Jul/48
seclists.org
https://issues.asterisk.org/jira/browse/ASTERISK-29381
issues.asterisk.org
and 7 more references View all →

Timeline

Published
Jul 27, 2021
Last Updated
Nov 21, 2024

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