CVE-2020-35729

Description

KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Klog Server authenticate.php user Unauthenticated Command Injection
exploit/linux/http/klog_server_authenticate_user_unauth_command_injection

Exploit-DB 2

Klog Server 2.4.1 - Unauthenticated Command Injection (Metasploit) EDB-49474 · webapps · Jan 25, 2021 · verified
Klog Server 2.4.1 - Command Injection (Unauthenticated) EDB-49366 · webapps · Jan 5, 2021 · verified

GitHub 1 repository

Al1ex/CVE-2020-35729 ★ 5 · Apr 9, 2021

CVE-2020-35729

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Klog Server <=2.41 - Unauthenticated Command Injection http/cves/2020/CVE-2020-35729.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.