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  • [gentoo-announce] [ GLSA 202210-12 ] Lighttpd: Denial of Service

    From [email protected]@21:1/5 to All on Mon Oct 31 03:20:01 2022
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    Gentoo Linux Security Advisory GLSA 202210-12
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    https://security.gentoo.org/
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    Severity: Low
    Title: Lighttpd: Denial of Service
    Date: October 31, 2022
    Bugs: #869890
    ID: 202210-12

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    Synopsis
    ========

    A vulnerability has been discovered in lighttpd which could result in
    denial of service.

    Background
    ==========

    Lighttpd is a lightweight high-performance web server.

    Affected packages
    =================

    -------------------------------------------------------------------
    Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
    1 www-servers/lighttpd < 1.4.67 >= 1.4.67

    Description
    ===========

    Lighttpd's mod_wstunnel does not initialize a handler function pointer
    if an invalid HTTP request (websocket handshake) is received.

    Impact
    ======

    An attacker can trigger a denial of service via making Lighttpd try to
    call an uninitialized function pointer.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All lighttpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.67"

    References
    ==========

    [ 1 ] CVE-2022-37797
    https://nvd.nist.gov/vuln/detail/CVE-2022-37797
    [ 2 ] CVE-2022-41556
    https://nvd.nist.gov/vuln/detail/CVE-2022-41556

    Availability
    ============

    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:

    https://security.gentoo.org/glsa/202210-12

    Concerns?
    =========

    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users' machines is of utmost
    importance to us. Any security concerns should be addressed to [email protected] or alternatively, you may file a bug at https://bugs.gentoo.org.

    License
    =======

    Copyright 2022 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).

    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.

    https://creativecommons.org/licenses/by-sa/2.5
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