CVE-2021-25294

Public Exploit

Description

OpenCATS through 0.9.5-3 unsafely deserializes index.php?m=activity requests, leading to remote code execution. This occurs because lib/DataGrid.php calls unserialize for the parametersactivity:ActivityDataGrid parameter. The PHP object injection exploit chain can leverage an __destruct magic method in guzzlehttp.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 27.84% Top 5%
Vendor Advisory opencats.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html third party advisory exploit
https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html third party advisory patch
https://www.opencats.org/news/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-25294?
CVE-2021-25294 has been scored as a critical severity vulnerability.
How to fix CVE-2021-25294?
To fix CVE-2021-25294, 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-2021-25294 being actively exploited in the wild?
It is possible that CVE-2021-25294 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~28% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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