CVE-2019-20210

CTHthemes CityBook Theme < 2.3.4, TownHub Theme < 1.0.6, EasyBook Theme < 1.2.2 - Cross-Site Scripting

2019-12-27 00:00
R3N0

Strategic Overview

Status
Patched in 1.2.2
Affected Version
< 1.2.2
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2019-20210
View all EasyBook – Hotel & Tour Booking WordPress Theme vulnerabilities

At a glance

CVE-2019-20210 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the EasyBook WordPress theme, affecting versions < 1.2.2. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.2.2; 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 Reflected XSS via a search query.

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 privileges on the target site.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in EasyBook < 1.2.2 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For EasyBook the fix is 1.2.2: builds < 1.2.2 are affected, anything from 1.2.2 onward is not.

Remediation

Update to version 1.2.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to EasyBook: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: EasyBook 1.2.2 closes this, and updating the theme is the step that ends it.

  • Firewall
  • Alerts

External References

Related records

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