CVE-2015-7576

Published: 16 February 2016

The http_basic_authenticate_with method in actionpack/lib/action_controller/metal/http_authentication.rb in the Basic Authentication implementation in Action Controller in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to bypass authentication by measuring timing differences.

Notes

In Oneiric-Saucy, rails package is just for transition;
The rails package contains actual code from vivid onward
precise_ruby-actionpack-2.3 -- documentation is buggy but
doesn't contain an implmentation itself.

Status

Severity score breakdown

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7576
• https://marc.info/?l=oss-security&m=145375027528562&w=2
• NVD
• Launchpad
• Debian