CVE-2023-37457
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
asterisk
- Vendor
- asterisk
- Product
- asterisk
- Platforms
- Unknown
- Default status
Unknown
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| <= 18.20.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| >= 19.0.0, <= 20.5.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| = 21.0.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| <= 18.9-cert5 | affected | Unavailable | Unavailable | Unavailable | None listed |