Auth bypass in Tt-Rss Tiny Rss
CVE-2021-28373
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- community.tt-rss.org/t/check-password-not-called-if-otp-is-enabled-update-asap-… (Patch, Issue Tracking, Vendor Advisory)
- git.tt-rss.org/fox/tt-rss/commit/4949e1a59059d9e72ba7a98f783cec312c06c6d2 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28373?
- CVE-2021-28373 is a high-severity vulnerability in Tt-Rss Tiny Rss, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2021-03-13.
- How severe is CVE-2021-28373?
- High severity. CVSS v3 base score is 7.5 out of 10.