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CVE-2023-45878

CRITICALCVSS 9.8/10EPSS 63.11%

Last modified

CVE-2023-45878 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubrics_visualise_saveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. EPSS estimates a 63.11% chance of exploitation in the next 30 days.

Description

GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubrics_visualise_saveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. The img parameter is expected to be a base64 encoded image. If the path parameter is set, the defined path is used as the destination folder, concatenated with the absolute path of the installation directory. The content of the img parameter is base64 decoded and written to the defined file path. This allows creation of PHP files that permit Remote Code Execution (unauthenticated).

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
63.11%

99.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GibboneduGibbon<= 25.0.01

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-45878?
GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because rubrics_visualise_saveAjax.phps does not require authentication. The endpoint accepts the img, path, and gibbonPersonID parameters. The img parameter is expected to be a base64 encoded image. If the path parameter is set, the defined path is used as the destination folder, concatenated with the absolute path of the installation directory. The content of the img parameter is base64 decoded and written to the defined file path. This allows creation of PHP files that permit Remote Code Execution (unauthenticated).
How severe is CVE-2023-45878?
CVE-2023-45878 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 63.11% probability of exploitation in the next 30 days.
How do I fix CVE-2023-45878?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-45878?

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Source: NVD / NIST