PT-2021-16506 · Unknown+1 · Guzzlehttp+1

Hansmach1Ne · Published 2021-01-18 · Updated 2021-01-26 · CVE-2021-25294

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: OpenCATS versions 0.9.5-3 and earlier

Description: The issue arises from the unsafe deserialization of requests to "index.php?m=activity", leading to remote code execution. This occurs because lib/DataGrid.php calls unserialize for the activity:ActivityDataGrid parameter. The PHP object injection exploit chain can leverage an destruct magic method in guzzlehttp.

Recommendations: For OpenCATS versions 0.9.5-3 and earlier, consider disabling the unserialize function call in lib/DataGrid.php for the activity:ActivityDataGrid parameter until a patch is available. Restrict access to the "index.php?m=activity" endpoint to minimize the risk of exploitation. Avoid using the activity:ActivityDataGrid parameter in the affected endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2021-25294

Affected Products

Opencats

Guzzlehttp

References · 7

• 🔥 https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html · Exploit
• https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-25294 · Security Note
• https://osv.dev/vulnerability/CVE-2021-25294 · Vendor Advisory
• https://opencats.org/news · Vendor Advisory
• https://t.me/cvenotify/8643 · Telegram Post
• https://t.me/cibsecurity/22240 · Telegram Post