USN-7839-1: Go Cryptography vulnerability

Publication date

23 October 2025

Overview

Go Cryptography could allow unintended access to network services.


Packages

Details

Damien Tournoud, Patrick Dawkins, Vince Parker, and Jules Duvivier
discovered that Go Cryptography incorrectly handled public keys during SSH
operations. An attacker could possibly use this issue to bypass
authorization mechanisms.

Damien Tournoud, Patrick Dawkins, Vince Parker, and Jules Duvivier
discovered that Go Cryptography incorrectly handled public keys during SSH
operations. An attacker could possibly use this issue to bypass
authorization mechanisms.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
24.04 LTS noble golang-golang-x-crypto-dev –  1:0.19.0-1ubuntu0.1~esm1  
22.04 LTS jammy golang-golang-x-crypto-dev –  1:0.0~git20211202.5770296-1ubuntu0.1~esm1  
20.04 LTS focal golang-golang-x-crypto-dev –  1:0.0~git20200221.2aa609c-1ubuntu0.1~esm1  
18.04 LTS bionic golang-go.crypto-dev –  1:0.0~git20170629.0.5ef0053-2ubuntu0.1~esm1  
golang-golang-x-crypto-dev –  1:0.0~git20170629.0.5ef0053-2ubuntu0.1~esm1  
16.04 LTS xenial golang-go.crypto-dev –  1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1  
golang-golang-x-crypto-dev –  1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm1  

Reduce your security exposure

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Have additional questions?

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