CVE-2020-15241 vulnerability in TYPO3 Products
Published on October 8, 2020
Cross-Site Scripting in TYPO3 Fluid Engine
TYPO3 Fluid Engine (package `typo3fluid/fluid`) before versions 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5 or 2.6.1 is vulnerable to cross-site scripting when making use of the ternary conditional operator in templates like `{showFullName ? fullName : defaultValue}`. Updated versions of this package are bundled in following TYPO3 (`typo3/cms-core`) versions as well: TYPO3 v8.7.25 (using `typo3fluid/fluid` v2.5.4) and TYPO3 v9.5.6 (using `typo3fluid/fluid` v2.6.1).
Vulnerability Analysis
CVE-2020-15241 can be exploited with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an Open Redirect Vulnerability?
A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. An http parameter may contain a URL value and could cause the web application to redirect the request to the specified URL. By modifying the URL value to a malicious site, an attacker may successfully launch a phishing scam and steal user credentials. Because the server name in the modified link is identical to the original site, phishing attempts have a more trustworthy appearance.
CVE-2020-15241 has been classified to as an Open Redirect vulnerability or weakness.
Products Associated with CVE-2020-15241
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Affected Versions
TYPO3 Fluid:- Version >= 2.0.0, < 2.0.5 is affected.
- Version >= 2.1.0, < 2.1.4 is affected.
- Version >= 2.2.0, < 2.2.1 is affected.
- Version >= 2.3.0, < 2.3.5 is affected.
- Version >= 2.4.0, < 2.4.1 is affected.
- Version >= 2.5.0, < 2.5.5 is affected.
- Version >= 2.6.0, < 2.6.1 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2020-15241
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| composer | typo3fluid/fluid | >= 2.0.0, < 2.0.5 | 2.0.5 |
| composer | typo3fluid/fluid | >= 2.1.0, < 2.1.4 | 2.1.4 |
| composer | typo3fluid/fluid | >= 2.2.0, < 2.2.1 | 2.2.1 |
| composer | typo3fluid/fluid | >= 2.3.0, < 2.3.5 | 2.3.5 |
| composer | typo3fluid/fluid | >= 2.4.0, < 2.4.1 | 2.4.1 |
| composer | typo3fluid/fluid | >= 2.5.0, < 2.5.5 | 2.5.5 |
| composer | typo3fluid/fluid | >= 2.6.0, < 2.6.1 | 2.6.1 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.