CVE-2020-35729 Command injection in n/a

Critical 9.8 Published Updated

An attacker can execute arbitrary OS commands via shell metacharacters in the user parameter of the authentication script.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-35729?

CVE-2020-35729 is a critical command injection vulnerability in n/a, published on 27 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-78

Which versions are affected by CVE-2020-35729?

It affects 1 product.

Products include Klogserver Klog Server.

How do I fix CVE-2020-35729?

No fix has been published for CVE-2020-35729 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2020-35729 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-35729 exists.

Public exploit code: 1 Metasploit module, 2 Exploit-DB entries, 1 Nuclei template and 1 proofs of concept on GitHub.

Sources

Also known as GHSA-w4v7-6457-x826.

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