RCE in Pi-Hole Adminlte
CVE-2021-32706
Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the `validDomainWildcard` preg_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.602 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.602 · newest: 0.602 · change: 0.000
Affected products
- Pi-Hole Adminlte — versions < 5.5.1
- Pi-Hole
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/pi-hole/AdminLTE/security/advisories/GHSA-5cm9-6p3m-v259 (Exploit, Third Party Advisory)
- github.com/pi-hole/AdminLTE/releases/tag/v5.5.1 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-32706?
- CVE-2021-32706 is a high-severity vulnerability in Pi-Hole Adminlte, classified under Code Injection. CVSS score: 7.6/10. Published 2021-08-04.
- How severe is CVE-2021-32706?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2021-32706 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.