UBUNTU-CVE-2018-20721

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    UBUNTU-CVE-2018-20721

    Published: 16 Jan 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-20721

    Summary:

    Details: URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6 address containing an embedded IPv4 address, such as a "//[::44.1" address.

    References: https://ubuntu.com/security/CVE-2018-20721, https://github.com/uriparser/uriparser/commit/cef25028de5ff872c2e1f0a6c562eb3ea9ecbce4, https://github.com/uriparser/uriparser/blob/master/ChangeLog, https://ubuntu.com/security/notices/USN-5172-1, https://www.cve.org/CVERecord?id=CVE-2018-20721, https://ubuntu.com/security/notices/USN-5172-2

    Affected packages

    Package

    Name: uriparser

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.7.5-1ubuntu2+esm2

    Affected versions

    0.7.5-1
    0.7.5-1ubuntu1
    0.7.5-1ubuntu2
    0.7.5-1ubuntu2+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