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CVE-2023-37457

Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'

Published: Dec 14, 2023Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-120
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.1%
Top 38.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an outside source. If the 'update' functionality is not used the vulnerability does not occur. A patch is available at commit a1ca0268254374b515fa5992f01340f7717113fa.

CVSS Vector Breakdown

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

CWE-120

Affected Products

asteriskasterisk
On-premWeb App
Communications / voip-telephony
asteriskdigiumCommunications
certified asterisksangoma
On-prem
Communications / voip-telephony
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
AsteriskDigium, Inc.
On-prem
Communications / voip-telephony
asteriskoss-projectCommunicationsaka open source, asterisk appliance developer kit
digiumcommercialUSCommunicationsaka digium, asterisk
sangomacommercialCACommunicationsaka freepbx, certified asterisk, asterisk
ооо «ред софт»commercialRUOperating Systemsaka red soft
digium, inc.commercialUSCommunicationsaka digium, digium inc.
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/asterisk/asterisk/security/advisories/GHSA-98rc-4j27-74hh
github.com
https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa
github.com
https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html
lists.debian.org
and 5 more references View all →

Timeline

Published
Dec 14, 2023
Last Updated
Nov 21, 2024

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