Vulnerability in Catchethq Catchet
CVE-2021-39172
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.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.292 (98.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.292 · newest: 0.292 · change: 0.000
Affected products
- Catchethq Catchet
- Fiveai Cachet — versions < 2.5.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/fiveai/Cachet/security/advisories/GHSA-9jxw-cfrh-jxq6 (Third Party Advisory)
- github.com/fiveai/Cachet/releases/tag/v2.5.1 (Third Party Advisory, Release Notes)
- blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39172?
- CVE-2021-39172 is a high-severity vulnerability in Catchethq Catchet, classified under CRLF Injection. CVSS score: 8.8/10. Published 2021-08-27.
- How severe is CVE-2021-39172?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-39172 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.