Ubuntu Security Notice USN-5080-2 – Torchsec
Ubuntu Security Notice USN-5080-2
September 16, 2021
libgcrypt20 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
Libgcrypt could be made to expose sensitive information.
Software Description:
- libgcrypt20: LGPL Crypto library
Details:
USN-5080-1 fixed several vulnerabilities in Libgcrypt. This update provides
the corresponding update for Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that Libgcrypt incorrectly handled ElGamal encryption. An
attacker could possibly use this issue to recover sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
libgcrypt20 1.6.5-2ubuntu0.6+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5080-2
https://ubuntu.com/security/notices/USN-5080-1
CVE-2021-33560, CVE-2021-40528
Gloss