Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2epss 0.6%
exploitation probability
0.6%top 52% of all CVEs
observed exploitation
nono source reports it
Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Cotonti · CotontiReferences
https://github.com/Cotonti/Cotontihttps://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.phphttps://github.com/Cotonti/Cotonti/issues/1890https://github.com/Cotonti/Cotonti/pull/1898https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng