Vulnerability in B2evolution
CVE-2022-30935
An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a bad randomness function. This allows the attacker to get valid sessions for arbitrary users, and optionally reset their password. Tested and confirmed in a default installation of version 7.2.3. Earlier versions are affected, possibly earlier major versions as well.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.014 · change: +0.003
Affected products
Weakness classification (CWE)
References
- github.com/b2evolution/b2evolution/blob/master/inc/_core/_misc.funcs.php (Patch, Third Party Advisory)
- github.com/b2evolution/b2evolution/issues/114 (Third Party Advisory, Issue Tracking)
- b2evolution.net/downloads/7-2-5-stable (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-30935?
- CVE-2022-30935 is a critical-severity vulnerability in B2evolution, classified under Use of Insufficiently Random Values. CVSS score: 9.1/10. Published 2022-09-28.
- How severe is CVE-2022-30935?
- Critical severity. CVSS v3 base score is 9.1 out of 10.