Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2020.2463
ksh security update
21 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: ksh
Publisher: Debian
Operating System: Debian GNU/Linux 9
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-14868
Reference: ESB-2020.1859
ESB-2020.0539
ESB-2020.0426
Original Bulletin:
https://www.debian.org/lts/security/2020/dla-2284
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Debian LTS Advisory DLA-2284-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Brian May
July 21, 2020 https://wiki.debian.org/LTS
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Package : ksh
Version : 93u+20120801-3.1+deb9u1
CVE ID : CVE-2019-14868
A flaw was found in the way it evaluates certain
environment variables. An attacker could use this
flaw to override or bypass environment restrictions
to execute shell commands. Services and
applications that allow remote unauthenticated
attackers to provide one of those environment
variables could allow them to exploit this issue
remotely.
For Debian 9 stretch, this problem has been fixed in version
93u+20120801-3.1+deb9u1.
We recommend that you upgrade your ksh packages.
For the detailed security status of ksh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/ksh
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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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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