CVE-2021-27964

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 18.31% Top 10%
Vendor Advisory sonlogger.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/erberkan/SonLogger-vulns third party advisory exploit
https://www.sonlogger.com/releasenotes release notes vendor advisory
http://packetstormsecurity.com/files/161793/SonLogger-4.2.3.3-Shell-Upload.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-27964?
CVE-2021-27964 has been scored as a critical severity vulnerability.
How to fix CVE-2021-27964?
To fix CVE-2021-27964, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27964 being actively exploited in the wild?
It is possible that CVE-2021-27964 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~18% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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