CVE-2022-39315 Kirby CMS vulnerable to user enumeration in the brute force protection

Medium 6.5 Published Updated

Attackers can enumerate valid user accounts in Kirby CMS via brute force protection timing, exposing user existence information.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2022-39315?

CVE-2022-39315 is a medium-severity vulnerability in getkirby kirby, published on 25 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Kirby is a Content Management System. Prior to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks because the attack does not scale to brute force. The problem has been patched in Kirby 3.5.8.2, Kirby 3.6.6.2, Kirby 3.7.5.1, and Kirby 3.8.1. In all of the mentioned releases, the maintainers have rewritten the affected code so that the delay is also inserted after the brute force limit is reached.

Weakness: CWE-209, CWE-204

Which versions are affected by CVE-2022-39315?

8 open source packages ship an affected version, including getkirby/cms. It affects 1 product.

PackageAffectedFixed in
getkirby/cms PackagistAll versions3.5.8.2
getkirby/cms PackagistAll versions3.5.8.2
getkirby/cms PackagistFrom 3.6.03.6.6.2
getkirby/cms PackagistFrom 3.6.03.6.6.2
getkirby/cms PackagistFrom 3.7.03.7.5.1
getkirby/cms PackagistFrom 3.7.03.7.5.1
2 more packages
getkirby/cms PackagistFrom 3.8.03.8.1
getkirby/cms PackagistFrom 3.8.03.8.1

Products include Getkirby Kirby.

How do I fix CVE-2022-39315?

Upgrade getkirby/cms to a fixed version for your release line: 3.5.8.2, 3.6.6.2, 3.7.5.1 or 3.8.1.

Is CVE-2022-39315 being exploited?

There is no known exploitation of CVE-2022-39315 in the wild and no public exploit code.

Sources

Also known as GHSA-c27j-76xg-6x4f.

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