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CVE-2021-39173

HIGH
Published 2021-08-27T23:00:09
Actions:

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CVSS Score

V3.1
8.8
/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.007
probability
of exploitation in the wild

There is a 0.7% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.720
Higher than 72.0% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

fiveai

Cachet

Affected Versions:

< 2.5.1

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

Cachet vulnerable to forced reinstall

GHSA-r67m-m8c7-jp83

Advisory Details

### 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.

Affected Packages

Packagist cachethq/cachet
ECOSYSTEM: ≥0 <2.5.1

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

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

Advisory provided by GitHub Security Advisory Database. Published: August 30, 2021, Modified: August 16, 2022

References

https://github.com/fiveai/Cachet/releases/tag/v2.5.1
https://github.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83
https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/
Published: 2021-08-27T23:00:09
Last Modified: 2024-08-04T01:58:18.192Z
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