CVE-2017-11364

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-08-02 · updated 2026-06-17
Weakness: CWE-295

Description

The CMS installer in Joomla! before 3.7.4 does not verify a user's ownership of a webspace, which allows remote authenticated users to gain control of the target application by leveraging Certificate Transparency logs.

Affected products

Joomla!: 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 (+174)

References

http://www.securitytracker.com/id/1039015
https://developer.joomla.org/security-centre/700-20170704-core-installer-lack-of-ownership-verification.html
https://media.defcon.org/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-Hanno-Boeck-Abusing-Certificate-Transparency-Logs.pdf
https://twitter.com/hanno/status/890281330906247168
http://www.securitytracker.com/id/1039015
https://developer.joomla.org/security-centre/700-20170704-core-installer-lack-of-ownership-verification.html
https://media.defcon.org/DEF%20CON%2025/DEF%20CON%2025%20presentations/DEFCON-25-Hanno-Boeck-Abusing-Certificate-Transparency-Logs.pdf
https://twitter.com/hanno/status/890281330906247168

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