CVE-2021-31878

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    CVE-2021-31878

    Published: 30 Jul 2021Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in PJSIP in Asterisk before 16.19.1 and before 18.5.1. To exploit, a re-INVITE without SDP must be received after Asterisk has sent a BYE request.

    References: https://issues.asterisk.org/jira/browse/ASTERISK-29381, http://downloads.asterisk.org/pub/security/AST-2021-007.html, http://packetstormsecurity.com/files/163638/Asterisk-Project-Security-Advisory-AST-2021-007.html, http://seclists.org/fulldisclosure/2021/Jul/48, https://downloads.digium.com/pub/security/AST-2021-007.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 77ea4d0b263053f9a9641a6fc1f873e7c13f5a84
    Fixed -None

    Affected versions

    16.17.0

    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-2021-31878 | CVE-DB