UBUNTU-CVE-2019-13161

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    UBUNTU-CVE-2019-13161

    Published: 12 Jul 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2019-13161

    Summary:

    Details: An issue was discovered in Asterisk Open Source through 13.27.0, 14.x and 15.x through 15.7.2, and 16.x through 16.4.0, and Certified Asterisk through 13.21-cert3. A pointer dereference in chan_sip while handling SDP negotiation allows an attacker to crash Asterisk when handling an SDP answer to an outgoing T.38 re-invite. To exploit this vulnerability an attacker must cause the chan_sip module to send a T.38 re-invite request to them. Upon receipt, the attacker must send an SDP answer containing both a T.38 UDPTL stream and another media stream containing only a codec (which is not permitted according to the chan_sip configuration).

    References: https://ubuntu.com/security/CVE-2019-13161, http://downloads.digium.com/pub/security/AST-2019-003.html, https://issues.asterisk.org/jira/browse/ASTERISK-28465, https://www.cve.org/CVERecord?id=CVE-2019-13161

    Affected packages

    Package

    Name: asterisk

    Purl: pkg:deb/ubuntu/asterisk@1:13.1.0~dfsg-1.1ubuntu4.1+esm1?arch=source&distro=esm-apps/xenial

    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