Critical Vulnerability in ruby-jwt Library

Critical Vulnerability in ruby-jwt Library Affects Ubuntu LTS

A critical flaw in the ruby-jwt library affects versions 2.7.1 and earlier, impacting Ubuntu LTS releases. No exploitation reported yet, but users are advised to update.

OffSet7 Newsroom · Reviewed by an OffSet7 analyst · AI-assisted

What happened

A critical vulnerability was discovered in the ruby-jwt library.

Who is affected

ruby-jwt versions 2.7.1 and earlier; various Ubuntu LTS releases.

Exploited

No exploitation reported.

What to do

Users are urged to update their systems to the patched versions provided in the advisory.

A critical vulnerability has been identified in the ruby-jwt library, affecting versions 2.7.1 and earlier. This flaw improperly verifies HMAC signatures when the verification key is empty or missing, potentially allowing remote attackers to forge tokens and bypass authentication.

The vulnerability impacts various Ubuntu LTS releases. Ubuntu has responded by releasing updates to mitigate the issue, and users are urged to update their systems to the patched versions provided in the advisory.

The vulnerability has been assigned a CVSS score indicating a high severity level. Despite the potential risks, there are currently no reports of exploitation in the wild. The situation is being monitored closely.

Sources

Ubuntu: USN-9059-1: ruby
Linuxsecurity: Ubuntu Ruby

Critical Vulnerability in ruby-jwt Library Affects Ubuntu LTS

Sources

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