CVE-2023-37457

high

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.

References

https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html

https://github.com/asterisk/asterisk/security/advisories/GHSA-98rc-4j27-74hh

https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa

Details

Source: Mitre, NVD

Published: 2023-12-14

Updated: 2023-12-29

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:C

Severity: High

CVSS v3

Base Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Severity: High