Vulnerability · Published Mar 3, 2021 · Assigned by GitHub_M

CVE-2021-21352Predictable tokens used for password resets

Medium 6.8

In plain English

A medium-severity weak randomness in timetracker from anuko. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)1.5%top 24.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Anuko Time Tracker is an open source, web-based time tracking application written in PHP. In TimeTracker before version 1.19.24.5415 tokens used in password reset feature in Time Tracker are based on system time and, therefore, are predictable. This opens a window for brute force attacks to guess user tokens and, once successful, change user passwords, including that of a system administrator. This vulnerability is pathced in version 1.19.24.5415 (started to use more secure tokens) with an additional improvement in 1.19.24.5416 (limited an available window for brute force token guessing).

Affected products (as reported)

Vendor	Product	Versions
anuko	timetracker	< 1.19.24.5415

Weakness: CWE-330 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

References

https://www.anuko.com/time-tracker/index.htm x_refsource_MISC
https://github.com/anuko/timetracker/security/advisories/GHSA-43c9-rx4h-4gqq x_refsource_CONFIRM
https://github.com/anuko/timetracker/commit/40f3d9345adc20e6f28eb9f59e2489aff87fecf5 x_refsource_MISC