CVE-2023-37457

    Dashboard / Vulnerabilities / CVE-2023-37457

    CVE-2023-37457

    Published: 14 Dec 2023Last Modified: 12 Aug 2026

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

    Details: 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/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37457.json, https://github.com/asterisk/asterisk/security/advisories/GHSA-98rc-4j27-74hh, https://nvd.nist.gov/vuln/detail/CVE-2023-37457, https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    13.13.0
    13.13.0-rc1
    13.13.0-rc2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-37457 | CVE-DB