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AUSCERT External Security Bulletin Redistribution
ESB-2018.1776
password-store -- GPG parsing vulnerabilities
15 June 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: password-store
Publisher: FreeBSD
Operating System: FreeBSD
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Overwrite Arbitrary Files -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-12356
Original Bulletin:
https://www.vuxml.org/freebsd/53eb9e1e-7014-11e8-8b1f-3065ec8fd3ec.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than FreeBSD. It is recommended that administrators
running password-store check for an updated version of the software
for their operating system.
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password-store -- GPG parsing vulnerabilities
Affected packages
password-store < 1.7.2
Details
VuXML ID 53eb9e1e-7014-11e8-8b1f-3065ec8fd3ec
Discovery 2018-06-14
Entry 2018-06-14
Jason A. Donenfeld reports:
Markus Brinkmann discovered that [the] parsing of gpg command line output
with regexes isn't anchored to the beginning of the line, which means an
attacker can generate a malicious key that simply has the verification
string as part of its username.
This has a number of nasty consequences:
o an attacker who manages to write into your ~/.password-store and also
inject a malicious key into your keyring can replace your .gpg-id key
and have your passwords encrypted under additional keys;
o if you have extensions enabled (disabled by default), an attacker who
manages to write into your ~/.password-store and also inject a malicious
key into your keyring can replace your extensions and hence execute
code.
References
CVE Name CVE-2018-12356
URL https://lists.zx2c4.com/pipermail/password-store/2018-June/003308.html
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