CVE-2021-27023 Unsafe HTTP Redirect in Puppet Agent and Puppet Server
Puppet Agent and Server leak HTTP credentials when following redirects to different hosts, exposing sensitive authentication data to attackers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-27023?
CVE-2021-27023 is a critical vulnerability in Fedoraproject Fedora, published on 18 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was discovered in Puppet Agent and Puppet Server that may result in a leak of HTTP credentials when following HTTP redirects to a different host. This is similar to CVE-2018-1000007
Which versions are affected by CVE-2021-27023?
4 open source packages ship an affected version, including puppet. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
puppet RubyGems | All versions | 6.25.1 |
puppet RubyGems | All versions | 6.25.1 |
puppet RubyGems | From 7.0.0 | 7.12.1 |
puppet RubyGems | From 7.0.0 | 7.12.1 |
Linux distribution packages (6)
puppet-agent Red Hat:satellite:6.9::el7 | All versions | 0:6.26.0-1.el7sat |
puppetserver Red Hat:satellite:6.9::el7 | All versions | 0:6.18.0-1.el7sat |
puppet-agent Red Hat:satellite_capsule:6.9::el7 | All versions | 0:6.26.0-1.el7sat |
puppetserver Red Hat:satellite_capsule:6.9::el7 | All versions | 0:6.18.0-1.el7sat |
puppet SUSE:Linux Enterprise Module for Advanced Systems Management 12 | All versions | 3.8.5-15.18.1 |
rubygem-puppet SUSE:Linux Enterprise Module for Advanced Systems Management 12 | All versions | 4.8.1-32.6.1 |
Products include Fedoraproject Fedora, Puppet Puppet Agent, Puppet Puppet Enterprise, Puppet Puppet Server.
How do I fix CVE-2021-27023?
Upgrade puppet to a fixed version for your release line: 6.25.1 or 7.12.1.
Is CVE-2021-27023 being exploited?
There is no known exploitation of CVE-2021-27023 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2021-27023, GHSA-93j5-g845-9wqp, RHSA-2022:1478, SUSE-SU-2022:3355-1, SUSE-SU-2022:3794-1, UBUNTU-CVE-2021-27023.