CVE-2021-39173
Prior to version 2.5.1 authenticated users, regardless of their privileges (User or Admin), can trick Cachet and install the instance again, leading to arbitrary code execution on the server.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Cachet is an open source status page system. Prior to version 2.5.1 authenticated users, regardless of their privileges (User or Admin), can trick Cachet and install the instance again, leading to arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving the middleware `ReadyForUse`, which now performs a stricter validation of the instance name. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.36% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-704
- Affected
- catchethq/catchet
- Source
- security-advisories@github.com
References
- https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/Exploit, Third Party Advisory
- https://github.com/fiveai/Cachet/releases/tag/v2.5.1Release Notes, Third Party Advisory
- https://github.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83Third Party Advisory
- https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/Exploit, Third Party Advisory
- https://github.com/fiveai/Cachet/releases/tag/v2.5.1Release Notes, Third Party Advisory
- https://github.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.