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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0769
                            zsh security update
                               3 March 2020

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

Product:           zsh
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-20044  

Original Bulletin: 
   https://security-tracker.debian.org/tracker/DLA-2117-1

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

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Package        : zsh
Version        : 5.0.7-5+deb8u1
CVE ID         : CVE-2019-20044
Debian Bug     : 951458


A privilege escalation vulnerability was discovered in zsh, a shell with
lots of features, whereby a user could regain a formerly elevated
privelege level even when such an action should not be permitted.

For Debian 8 "Jessie", this problem has been fixed in version
5.0.7-5+deb8u1.

We recommend that you upgrade your zsh packages.

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

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This security bulletin is provided as a service to AusCERT's members.  As
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
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                On call after hours for member emergencies only.
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