🛡️ CVE-2023-37457
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-120 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-120
Public Exploit ✅ No
Source NVD
Published 2023-12-14
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
asterisk — —
certified-asterisk — —

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