libzstd: Access Confidential Data -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0657
                          libzstd security update
                             22 February 2021

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

Product:           libzstd
Publisher:         Debian
Operating System:  Debian GNU/Linux
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://www.debian.org/security/2021/dsa-4859

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running libzstd check for an updated version of the software for 
         their operating system.

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Debian Security Advisory DSA-4859-1                   security@debian.org
https://www.debian.org/security/                       Sebastien Delafond
February 20, 2021                     https://www.debian.org/security/faq
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Package        : libzstd
Debian Bug     : 982519

It was discovered that zstd, a compression utility, was vulnerable to
a race condition: it temporarily exposed, during a very short
timeframe, a world-readable version of its input even if the original
file had restrictive permissions.

For the stable distribution (buster), this problem has been fixed in
version 1.3.8+dfsg-3+deb10u2.

We recommend that you upgrade your libzstd packages.

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

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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