CVE-2020-35729
CriticalPublic exploitKLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.
Published Dec 27, 2020 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2020-35729 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Klog Server (Klogserver).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 88% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
88%
Higher than 99.7% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-35729 brief as a PDF
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Description
KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Klog ServerKlogserver | 2.4.1 | n/a |
Timeline
Publicly disclosed
Dec 27, 2020
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- exploithttp://packetstormsecurity.com/files/160798/Klog-Server-2.4.1-Command-Injection.html
- exploithttp://packetstormsecurity.com/files/161123/Klog-Server-2.4.1-Command-Injection.html
- exploithttp://packetstormsecurity.com/files/161410/Klog-Server-2.4.1-Command-Injection.html
- exploithttps://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/Exploit_Code
- exploithttps://github.com/mustgundogdu/Research/blob/main/KLOG_SERVER/README.md
FAQ
Common Questions.
KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.
Affected: Klog Server (Klogserver) versions 2.4.1. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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