CVE-2021-39172

high-risk
Published 2021-08-27

Cachet is an open source status page system. Prior to version 2.5.1, authenticated users, regardless of their privileges (User or Admin), can exploit a new line injection in the configuration edition feature (e.g. mail settings) and gain arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving `UpdateConfigCommandHandler` and preventing the use of new lines characters in new configuration values. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

Do I need to act?

!
55.5% chance of exploitation in next 30 days
EPSS score — higher than 44% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Catchethq

References (6)

Exploit https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-inj...
Release Notes https://github.com/fiveai/Cachet/releases/tag/v2.5.1
Third Party Advisory https://github.com/fiveai/Cachet/security/advisories/GHSA-9jxw-cfrh-jxq6
Exploit https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-inj...
Release Notes https://github.com/fiveai/Cachet/releases/tag/v2.5.1
Third Party Advisory https://github.com/fiveai/Cachet/security/advisories/GHSA-9jxw-cfrh-jxq6
53
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 18/34 · Moderate
Exposure 5/34 · Minimal