UBUNTU-CVE-2020-35776

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    UBUNTU-CVE-2020-35776

    Published: 18 Feb 2021Last Modified: 17 Oct 2026
    Upstream:
    CVE-2020-35776

    Summary:

    Details: A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.

    References: https://ubuntu.com/security/CVE-2020-35776, https://downloads.asterisk.org/pub/security/AST-2021-001.html, https://issues.asterisk.org/jira/browse/ASTERISK-29227, http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html, http://seclists.org/fulldisclosure/2021/Feb/57, https://issues.asterisk.org/, https://www.cve.org/CVERecord?id=CVE-2020-35776

    Affected packages

    Package

    Name: asterisk

    Purl: pkg:deb/ubuntu/asterisk?arch=source&distro=esm-apps%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1:13.1.0~dfsg-1.1ubuntu3
    1:13.1.0~dfsg-1.1ubuntu4
    1:13.1.0~dfsg-1.1ubuntu4.1
    1:13.1.0~dfsg-1.1ubuntu4.1+esm1

    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
    UBUNTU-CVE-2020-35776 | CVE-DB