CTHthemes CityBook < 2.3.4, TownHub < 1.0.6, EasyBook < 1.2.2 Themes - Authenticated Post Deleition via IDOR
Strategic Overview
- Status
- Patched in 2.3.4
- Affected Theme
- CityBook - Directory & Listing WordPress Theme
- Affected Version
< 2.3.4- CVSS
- 6.5Medium
- Weakness type
- CWE-639 · Authorization Bypass Through User-Controlled Key
- CVE
CVE-2019-20209
At a glance
CVE-2019-20209 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the CityBook - Directory & Listing WordPress Theme WordPress theme, affecting versions < 2.3.4. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires an authenticated account. The issue is fixed in version 2.3.4; sites on affected versions should update now. Disclosed December 2019, reported by R3N0.
Vulnerability Overview
The CTHthemes CityBook before 2.3.4, TownHub before 1.0.6, and EasyBook before 1.2.2 themes for WordPress allow unspecified authenticated users to delete any page/post/listing via insecure Direct Object Reference (IDOR).
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on integrity.
CWE-639: Authorization Bypass Through User-Controlled Key
Reaching this weakness in CityBook - Directory & Listing WordPress Theme < 2.3.4 takes any authenticated account. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.
Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For CityBook - Directory & Listing WordPress Theme the fix is 2.3.4: builds < 2.3.4 are affected, anything from 2.3.4 onward is not.
Remediation
Update to version 2.3.4, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: CityBook - Directory & Listing WordPress Theme 2.3.4 closes this, and updating the theme is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in CityBook - Directory & Listing WordPress Theme
- 7.2CVE-2019-20212: CTHthemes CityBook , TownHub <= 1.0.5, and EasyBook
CVE-2019-20212 - 7.2CVE-2019-20211: CTHthemes CityBook , TownHub <= 1.0.5, and EasyBook
CVE-2019-20211 - 6.1CityBook <= 2.4.3 Reflected Cross-Site Scripting
- 6.1CVE-2019-20210: CTHthemes CityBook Theme , TownHub Theme < 1.0.6
CVE-2019-20210
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