Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.0425
libu2f-host security update
12 February 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: libu2f-host
Publisher: Debian
Operating System: Debian GNU/Linux 9
Linux variants
Impact/Access: Execute Arbitrary Code/Commands -- Console/Physical
Resolution: Patch/Upgrade
CVE Names: CVE-2018-20340
Original Bulletin:
http://www.debian.org/security/2019/dsa-4389
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running libu2f-host check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-4389-1 security@debian.org
https://www.debian.org/security/ Sebastien Delafond
February 11, 2019 https://www.debian.org/security/faq
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Package : libu2f-host
CVE ID : CVE-2018-20340
Debian Bug : 921725
Christian Reitter discovered that libu2f-host, a library implementing
the host-side of the U2F protocol, failed to properly check for a
buffer overflow. This would allow an attacker with a custom made
malicious USB device masquerading as a security key, and physical
access to a computer where PAM U2F or an application with libu2f-host
integrated, to potentially execute arbitrary code on that computer.
For the stable distribution (stretch), this problem has been fixed in
version 1.1.2-2+deb9u1.
We recommend that you upgrade your libu2f-host packages.
For the detailed security status of libu2f-host please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libu2f-host
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/
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