CVE-2021-28373 Auth bypass in n/a

High 7.5 Published 13 Mar 2021 Updated 3 Aug 2024

An authentication bypass in Tiny Tiny RSS allows attackers to log in using only an OTP code, bypassing password validation.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-28373?

CVE-2021-28373 is a high-severity authentication bypass vulnerability in n/a, published on 13 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The auth_internal plugin in Tiny Tiny RSS (aka tt-rss) before 2021-03-12 allows an attacker to log in via the OTP code without a valid password. NOTE: this issue only affected the git master branch for a short time. However, all end users are explicitly directed to use the git master branch in production. Semantic version numbers such as 21.03 appear to exist, but are automatically generated from the year and month. They are not releases.

Weakness: CWE-863

Which versions are affected by CVE-2021-28373?

It affects 1 product.

Products include Tt-Rss Tiny Tiny Rss.

How do I fix CVE-2021-28373?

No fix has been published for CVE-2021-28373 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-28373 being exploited?

There is no known exploitation of CVE-2021-28373 in the wild and no public exploit code.

Sources

Also known as GHSA-vv4w-hr59-hmw6.