Critical severity · published Jan 18, 2021
CVE-2021-25294
OpenCATS through 0.9.5-3 unsafely deserializes index.php?m=activity requests, leading to remote code execution
9.8
CVSS
11.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)11.3% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Opencats · Opencats
through 0.9.5-3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25294
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25294
Patch
https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html
Exploit
https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html
Vendor Advisory
https://www.opencats.org/news/
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