1. Forum
  2. Usenet
  3. COMP.UNIX.BSD.FREEBSD.ANN

  • FreeBSD Errata Notice FreeBSD-EN-22:28.heimdal

    From FreeBSD Errata Notices@21:1/5 to All on Wed Nov 30 01:00:16 2022
    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA512

    ============================================================================= FreeBSD-EN-22:28.heimdal Errata Notice
    The FreeBSD Project

    Topic: Regression in Heimdal KDC

    Category: contrib
    Module: heimdal
    Announced: 2022-11-29
    Affects: All supported versions of FreeBSD.
    Corrected: 2022-11-18 01:09:42 UTC (stable/13, 13.1-STABLE)
    2022-11-29 23:04:48 UTC (releng/13.1, 13.1-RELEASE-p5)
    2022-11-18 01:10:53 UTC (stable/12, 12.4-STABLE)
    2022-11-29 23:19:12 UTC (releng/12.4, 12.4-RC2-p2)
    2022-11-29 23:16:21 UTC (releng/12.3, 12.3-RELEASE-p10)

    For general information regarding FreeBSD Errata Notices and Security Advisories, including descriptions of the fields above, security
    branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>.

    I. Background

    Heimdal implements the Kerberos 5 network authentication protocols.

    A Key Distribution Center (KDC) is trusted by all principals registered
    in that administrative "realm" to store a secret key in confidence, of
    which, the proof of knowledge is used to verify the authenticity of a principal.

    FreeBSD-SA-22:14.heimdal corrected multiple vulnerabilities in the Heimdal implementation of the Kerberos 5 network authentication protocols and KDC included as part of the FreeBSD base system.

    II. Problem Description

    The patch released with FreeBSD-SA-22:14.heimdal included an inadvertently merged block of code which prevents the KDC from issuing valid tickets.

    III. Impact

    A system patched with FreeBSD-SA-22:14.heimdal will have a defective KDC.

    IV. Workaround

    No workaround is available. Systems that were not updated with the patch from FreeBSD-SA-22:14.heimdal are not affected. Note that unpatched systems are vulnerable to multiple security issues.

    V. Solution

    Upgrade your system to a supported FreeBSD stable or release / security
    branch (releng) dated after the correction date.

    A reboot is recommended.

    Perform one of the following:

    1) To update your system via a binary patch:

    Systems running a RELEASE version of FreeBSD on the amd64, i386, or
    (on FreeBSD 13 and later) arm64 platforms can be updated via the freebsd-update(8) utility:

    # freebsd-update fetch
    # freebsd-update install

    A reboot is recommended.

    2) To update your system via a source code patch:

    The following patches have been verified to apply to the applicable
    FreeBSD release branches.

    a) Download the relevant patch from the location below, and verify the
    detached PGP signature using your PGP utility.

    # fetch https://security.FreeBSD.org/patches/EN-22:28/heimdal.patch
    # fetch https://security.FreeBSD.org/patches/EN-22:28/heimdal.patch.asc
    # gpg --verify heimdal.patch.asc

    b) Apply the patch. Execute the following commands as root:

    # cd /usr/src
    # patch < /path/to/patch

    c) Recompile the operating system using buildworld and installworld as described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.

    Restart all daemons that use Kerberos, or reboot the system.

    VI. Correction details

    This issue is corrected by the corresponding Git commit hash or Subversion revision number in the following stable and release branches:

    Branch/path Hash Revision
    - ------------------------------------------------------------------------- stable/13/ b23fe6badeba stable/13-n253102 releng/13.1/ 10571c04c9dd releng/13.1-n250173 stable/12/ r372759 releng/12.4/ r372779 releng/12.3/ r372776
    - -------------------------------------------------------------------------

    For FreeBSD 13 and later:

    Run the following command to see which files were modified by a
    particular commit:

    # git show --stat <commit hash>

    Or visit the following URL, replacing NNNNNN with the hash:

    <URL:https://cgit.freebsd.org/src/commit/?id=NNNNNN>

    To determine the commit count in a working tree (for comparison against
    nNNNNNN in the table above), run:

    # git rev-list --count --first-parent HEAD

    For FreeBSD 12 and earlier:

    Run the following command to see which files were modified by a particular revision, replacing NNNNNN with the revision number:

    # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base

    Or visit the following URL, replacing NNNNNN with the revision number:

    <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>

    VII. References

    <URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-22:14.heimdal.asc> <URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267827>

    The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-22:28.heimdal.asc> -----BEGIN PGP SIGNATURE-----

    iQIzBAEBCgAdFiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAmOGlvgACgkQ05eS9J6n 5cISog/8DVRGrMXWSdmaqa5KpO3SZ1o5mmhZDWYKRxDQZv0puJ6lTus44VtixzM6 ft1zRe2yQy3YoTtcxho2jY8zppcdg5r4rIR4rXsxIAjufxd53hxmWYXjN6zObxTB Owebw+xvJSG5ls020iRECI+YjE32ssXLBI7XkqOVnErF/UmxkTQM86VPHene3WwU EhwwM1i7ZUdl/11tGPft975u5waKUFxeRF4jpFLu/pbDqHBoFgY4AT2ivs+6jwaO o4X0gBDKDh/xXU7yFSdPfF09PRgSCosPMr8UNWXBlS6WYEmGPiRlS3NDB8EMFDw/ AElMEqlT55DzdFi4qD91x+FPeIQ+NbJCNjFuZDXv4lZtAvGF/ue4wfxH/ZNcAo06 SH1tJolwu0l6Q7e/6a+cU7RsonVhv7K2j5DKddoNSZcla/kg9z1IkYGgt0OrtOWn eMhuiLNsBZwebWsYWT/MG5nHaL79jWKPy69c+b8yXcpdrpfC4DNVmnTiiHzpus46 9K4X5aOgCMW6C19hIWvH74s6sWo8ZoEz4BaslJZ7AeHSv6HPGfUZBygtYm739a/J U8WN+rRIzsaxHQXts6LF8xroJtUvxQ76TZgK58k/Pma+Xa0vdYLcyqd/XEaFm1CW 7rLqVzTsHTlOz7JaMLnNm1aY6KKyERnJ94ii+LOjeldCAVWMNE0=
    =aUbR
    -----END PGP SIGNATURE-----

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)