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  • [gentoo-announce] [ GLSA 202311-08 ] GNU Libmicrohttpd: Buffer Overflow

    From [email protected]@21:1/5 to All on Sat Nov 25 09:40:02 2023
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    Gentoo Linux Security Advisory GLSA 202311-08
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    https://security.gentoo.org/
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    Severity: High
    Title: GNU Libmicrohttpd: Buffer Overflow Vulnerability
    Date: November 25, 2023
    Bugs: #778296
    ID: 202311-08

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    Synopsis
    ========

    A buffer overflow vulnerability has been discovered in GNU
    Libmicrohttpd.

    Background
    ==========

    GNU libmicrohttpd is a small C library that makes it easy to run an HTTP
    server as part of another application. GNU Libmicrohttpd is free
    software and part of the GNU project.

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

    Package Vulnerable Unaffected
    ---------------------- ------------ ------------
    net-libs/libmicrohttpd = 0.9.70 > 0.9.70

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

    A buffer overflow vulnerability has been discovered in GNU
    Libmicrohttpd. Please review the CVE identifier referenced below for
    details.

    Impact
    ======

    A missing bounds check in the post_process_urlencoded function leads to
    a buffer overflow, allowing a remote attacker to write arbitrary data in
    an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All GNU Libmicrohttpd users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">net-libs/libmicrohttpd-0.9.70"

    References
    ==========

    [ 1 ] CVE-2021-3466
    https://nvd.nist.gov/vuln/detail/CVE-2021-3466

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

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

    https://security.gentoo.org/glsa/202311-08

    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 2023 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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