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CVE-2021-36582

CRITICALCVSS 9.8/10EPSS 1.46%

Last modified

CVE-2021-36582 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content/Template/root/reverse-shell.aspx and can be simply triggered by browsing that URL.. EPSS estimates a 1.46% chance of exploitation in the next 30 days.

Description

In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content/Template/root/reverse-shell.aspx and can be simply triggered by browsing that URL.

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
1.46%

70.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
KoobooKooboo Cms2.1.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-36582?
In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content/Template/root/reverse-shell.aspx and can be simply triggered by browsing that URL.
How severe is CVE-2021-36582?
CVE-2021-36582 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36582?
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-2021-36582?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST