Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXI2N20tbThjNy1qcDgz

Cachet vulnerable to forced reinstall

Impact

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.

Patches

This issue was addressed by improving the middleware ReadyForUse, which now performs a stricter validation of the instance name.

Workarounds

Only allow trusted source IP addresses to access to the administration dashboard.

References

• https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection

For more information

If you have any questions or comments about this advisory, you can contact:

• The original reporters, by sending an email to vulnerability.research [at] sonarsource.com;
• The maintainers, by opening an issue on this repository.

Permalink: https://github.com/advisories/GHSA-r67m-m8c7-jp83
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXI2N20tbThjNy1qcDgz
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 8.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-r67m-m8c7-jp83, CVE-2021-39173
References:

• https://github.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83
• https://nvd.nist.gov/vuln/detail/CVE-2021-39173
• https://github.com/fiveai/Cachet/releases/tag/v2.5.1
• https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/
• https://github.com/advisories/GHSA-r67m-m8c7-jp83

Repository: https://github.com/fiveai/Cachet
Blast Radius: 7.4

Affected Packages