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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.1057
                          expat regression update
                               14 March 2022

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           expat
Publisher:         Debian
Operating System:  Debian GNU/Linux
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-25236  

Original Bulletin: 
   https://lists.debian.org/debian-security-announce/2022/msg00069.html

Comment: CVSS (Max):  9.8 CVE-2022-25236 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: NVD
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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Debian Security Advisory DSA-5085-2                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
March 13, 2022                        https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : expat

The update for expat released as DSA 5085-1 introduced regressions for
applications using URI characters (':' in particular) for a namespace
separator (while the HTML API docs of function XML_ParserCreateNS have
been advising against their use). Updated expat packages are now
available which relax the fix for CVE-2022-25236 with regard to RFC 3986
URI characters.

For the oldstable distribution (buster), this problem has been fixed
in version 2.2.6-2+deb10u4.

For the stable distribution (bullseye), this problem has been fixed in
version 2.2.10-2+deb11u3.

We recommend that you upgrade your expat packages.

For the detailed security status of expat please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/expat

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
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===========================================================================
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