UBUNTU-CVE-2021-38165

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    UBUNTU-CVE-2021-38165

    Published: 7 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-38165
    Aliases:
    USN-4800-1

    Summary:

    Details: Lynx through 2.8.9 mishandles the userinfo subcomponent of a URI, which allows remote attackers to discover cleartext credentials because they may appear in SNI data.

    References: https://ubuntu.com/security/CVE-2021-38165, https://lists.nongnu.org/archive/html/lynx-dev/2021-08/msg00002.html, https://lynx.invisible-island.net/current/CHANGES.html#v2.9.0dev.9, https://invisible-mirror.net/archives/lynx/patches/lynx2.9.0dev.9.patch.gz, https://www.openwall.com/lists/oss-security/2021/08/07/1, https://github.com/w3c/libwww/blob/f010b4cc58d32f34b162f0084fe093f7097a61f0/Library/src/HTParse.c#L118, https://lynx.invisible-island.net/current/CHANGES.html, https://bugs.debian.org/991971, https://www.openwall.com/lists/oss-security/2021/08/07/11, http://www.openwall.com/lists/oss-security/2021/08/07/9, https://ubuntu.com/security/notices/USN-4800-1, https://www.cve.org/CVERecord?id=CVE-2021-38165

    Affected packages

    Package

    Name: lynx

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.8.9dev8-4ubuntu1+esm2

    Affected versions

    2.8.9dev8-4ubuntu1
    2.8.9dev8-4ubuntu1+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-2021-38165 | CVE-DB