Auth bypass in Epikur
CVE-2020-10539
An issue was discovered in Epikur before 20.1.1. The Epikur server contains the checkPasswort() function that, upon user login, checks the submitted password against the user password's MD5 hash stored in the database. It is also compared to a second MD5 hash, which is the same for every user (aka a "Backdoor Password" of 3p1kursupport). If the submitted password matches either one, access is granted.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.x41-dsec.de/lab/advisories/x41-2020-003-epikur (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10539?
- CVE-2020-10539 is a critical-severity vulnerability in Epikur, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-02-05.
- How severe is CVE-2020-10539?
- Critical severity. CVSS v3 base score is 9.8 out of 10.