Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.3060
doas: Prevent passing of environment variables
12 August 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: doas
Publisher: FreeBSD
Operating System: FreeBSD
OpenBSD
Linux variants
Impact/Access: Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
Original Bulletin:
http://www.vuxml.org/freebsd/7f7d6412-bae5-11e9-be92-3085a9a95629.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than FreeBSD. It is recommended that administrators
running doas check for an updated version of the software for their
operating system.
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FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports
Collection
doas -- Prevent passing of environment variables
Affected packages
doas < 6.1
Details
VuXML ID 7f7d6412-bae5-11e9-be92-3085a9a95629
Discovery 2019-08-03
Entry 2019-08-09
Jesse Smith of Resonating Media reports:
Previous versions of "doas" transferred most environment variables, such as
USER, HOME, and PATH from the original user to the target user. Passing
these variables could cause files in the wrong path or home directory to be
read (or written to), which resulted in potential security problems.
[source]
References
URL https://github.com/slicer69/doas/releases/tag/6.1
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