CVE-2021-21307

high-risk
Published 2021-02-11

Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.

Do I need to act?

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92.4% chance of exploitation in next 30 days
EPSS score — higher than 8% 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
8
CVSS 8.6/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Lucee

References (14)

Patch http://ciacfug.org/blog/updating-lucee-as-part-of-a-vulnerability-alert-response
Exploit http://packetstormsecurity.com/files/163864/Lucee-Administrator-imgProcess.cfm-A...
Vendor Advisory https://dev.lucee.org/t/lucee-vulnerability-alert-november-2020/7643
Exploit https://github.com/httpvoid/writeups/blob/main/Apple-RCE.md
Patch https://github.com/lucee/Lucee/commit/6208ab7c44c61d26c79e0b0af10382899f57e1ca
Product https://github.com/lucee/Lucee/security/advisories/GHSA-2xvv-723c-8p7r
Press/Media Coverage https://portswigger.net/daily-swig/security-researchers-earn-50k-after-exposing-...
Patch http://ciacfug.org/blog/updating-lucee-as-part-of-a-vulnerability-alert-response
Exploit http://packetstormsecurity.com/files/163864/Lucee-Administrator-imgProcess.cfm-A...
Vendor Advisory https://dev.lucee.org/t/lucee-vulnerability-alert-november-2020/7643
Exploit https://github.com/httpvoid/writeups/blob/main/Apple-RCE.md
Patch https://github.com/lucee/Lucee/commit/6208ab7c44c61d26c79e0b0af10382899f57e1ca
Product https://github.com/lucee/Lucee/security/advisories/GHSA-2xvv-723c-8p7r
Press/Media Coverage https://portswigger.net/daily-swig/security-researchers-earn-50k-after-exposing-...
54
/ 100
high-risk
Severity 29/34 · Critical
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal