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AUSCERT External Security Bulletin Redistribution
ESB-2020.0164
USN-4236-2: Libgcrypt vulnerability
16 January 2020
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AusCERT Security Bulletin Summary
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Product: libgcrypt20
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-13627
Reference: ESB-2020.0131
ESB-2020.0008
Original Bulletin:
https://usn.ubuntu.com/4236-2/
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USN-4236-2: Libgcrypt vulnerability
14 January 2020
libgcrypt20 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 16.04 LTS
Summary
Libgcrypt could be made to expose sensitive information.
Software Description
o libgcrypt20 - LGPL Crypto library
Details
USN-4236-1 fixed a vulnerability in Libgcrypt. This update provides the
corresponding fix for Ubuntu 16.04 LTS.
Original advisory 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 16.04 LTS
libgcrypt20 - 1.6.5-2ubuntu0.6
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 USN-4236-1
o CVE-2019-13627
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