CVE-2021-27964 File upload in n/a

Critical 9.8 Published Updated

Unauthenticated attackers can upload arbitrary files via an unprotected endpoint, potentially leading to remote code execution.

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-2021-27964?

CVE-2021-27964 is a critical vulnerability in n/a, published on 5 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SonLogger before 6.4.1 is affected by Unauthenticated Arbitrary File Upload. An attacker can send a POST request to /Config/SaveUploadedHotspotLogoFile without any authentication or session header. There is no check for the file extension or content of the uploaded file.

Weakness: CWE-434

Which versions are affected by CVE-2021-27964?

It affects 1 product.

Products include Sfcyazilim Sonlogger.

How do I fix CVE-2021-27964?

No fix has been published for CVE-2021-27964 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-27964 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-27964 exists.

Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.

Sources

Also known as GHSA-mxm8-cmpq-g5cx.

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