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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.17% probability · 66th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- b2evolution/b2evolution
- Source
- cve@mitre.org
References
- https://b2evolution.net/downloads/7-2-5-stablePatch, Vendor Advisory
- https://github.com/b2evolution/b2evolution/blob/master/inc/_core/_misc.funcs.php#L5955Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/114Issue Tracking, Third Party Advisory
- https://b2evolution.net/downloads/7-2-5-stablePatch, Vendor Advisory
- https://github.com/b2evolution/b2evolution/blob/master/inc/_core/_misc.funcs.php#L5955Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/114Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.