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AUSCERT External Security Bulletin Redistribution
ESB-2020.0131
USN-4236-1: Libgcrypt vulnerability
14 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: libgcrypt20
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-13627
Reference: ESB-2020.0008
ESB-2019.3683
ESB-2019.3598
ESB-2019.3337
Original Bulletin:
https://usn.ubuntu.com/4236-1/
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USN-4236-1: Libgcrypt vulnerability
13 January 2020
libgcrypt20 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 19.04
o Ubuntu 18.04 LTS
Summary
Libgcrypt could be made to expose sensitive information.
Software Description
o libgcrypt20 - LGPL Crypto library
Details
It was discovered that Libgcrypt was susceptible to a ECDSA timing attack. An
attacker could possibly use this attack to recover sensitive information.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
libgcrypt20 - 1.8.4-5ubuntu2.1
Ubuntu 19.04
libgcrypt20 - 1.8.4-3ubuntu1.1
Ubuntu 18.04 LTS
libgcrypt20 - 1.8.1-4ubuntu1.2
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-13627
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