ALPINE-CVE-2021-26906

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    ALPINE-CVE-2021-26906

    Published: 18 Feb 2021Last Modified: 27 Aug 2026
    Upstream:
    CVE-2021-26906

    Summary:

    Details: An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.

    References: https://security.alpinelinux.org/vuln/CVE-2021-26906

    Affected packages

    Package

    Name: asterisk

    Purl: pkg:apk/alpine/asterisk?arch=source

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 13.0.0
    Fixed -16.16.1-r0

    Affected versions

    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
    ALPINE-CVE-2021-26906 | CVE-DB