CVE-2021-25294

high-risk
Published 2021-01-18

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.

Do I need to act?

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27.7% chance of exploitation in next 30 days
EPSS score — higher than 72% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Opencats

References (6)

Patch https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-appli...
Exploit https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats...
Vendor Advisory https://www.opencats.org/news/
Patch https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-appli...
Exploit https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats...
Vendor Advisory https://www.opencats.org/news/
52
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 15/34 · Moderate
Exposure 5/34 · Minimal