CVE-2023-47125 affects TYPO3, an open-source PHP-based web content management system. This vulnerability allows bypassing the cross-site scripting mechanism of the typo3/html-sanitizer due to improper handling of DOM processing instructions in affected versions. With a CVSS score of 4.7, categorized as medium severity, this vulnerability poses a risk to organizations relying on TYPO3 for content management. Without adequate remediation, attackers could exploit this flaw to perform unauthorized actions.
Organizations should prioritize patching immediately. TYPO3 has released versions 1.5.3 and 2.1.4 to address this vulnerability. Users are strongly advised to upgrade, as there are no known workarounds available. The urgency of this patch is underscored by the potential for attackers to leverage this flaw to execute cross-site scripting attacks.
The vulnerability was published on November 14, 2023, and has been modified since its release. It is classified under CWE-79, which pertains to improper neutralization of input during web page generation, leading to cross-site scripting. Organizations using vulnerable versions of TYPO3 must assess their exposure and take immediate action to apply the necessary patches.
Given the potential impact of this vulnerability, it is crucial for security teams to conduct thorough assessments of their TYPO3 installations and implement the recommended upgrades without delay.
Vulnerability Details
The vulnerability is characterized as follows:
Field | Details |
|---|---|
CVE ID | CVE-2023-47125 |
Severity | Medium |
CVSS Score | 4.7 |
Attack Vector | Network |
User Interaction | Required |
Confidentiality Impact | Low |
Integrity Impact | Low |
Technical Analysis
The root cause of CVE-2023-47125 lies in the improper handling of DOM processing instructions within TYPO3's HTML sanitizer. Attackers may leverage this vulnerability by crafting specific payloads that exploit the misconfiguration, resulting in a bypass of the cross-site scripting protections. The attack vector is classified as network-based, and the complexity of the attack is rated as high, meaning that successful exploitation requires a certain level of skill and understanding of the system.
No privileges are required, and while user interaction is necessary to trigger the vulnerability, the potential impacts include low confidentiality and integrity. There is no impact on availability, making the overall risk moderate but notable.
Risk & Impact Analysis
Risk to organizations includes the potential for attackers to execute cross-site scripting attacks, which could lead to unauthorized data access, session hijacking, or defacement of affected web applications. The blast radius for this vulnerability is significant, particularly for organizations that rely heavily on TYPO3 for their web content management.
Urgency assessment based on the CVSS score indicates that organizations should address this vulnerability in their priority patch cycle. Given that it has been publicly disclosed and there are no known workarounds, the window for potential exploitation is open, highlighting the importance of prompt remediation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects several versions of TYPO3 and the HTML sanitizer component. Specifically, the following versions are vulnerable:
Component | Affected Versions |
|---|---|
HTML Sanitizer | 1.0.0 - 1.5.3, 2.0.0 - 2.1.4 |
TYPO3 | 8.7.42 - 8.7.55, 9.5.29 - 9.5.44, 10.4.19 - 10.4.41, 11.3.2 - 11.5.33, 12.0.0 - 12.4.8 |
Mitigation & Remediation
Organizations must upgrade to TYPO3 versions 1.5.3 or 2.1.4 to remediate this vulnerability. If immediate patching is not possible, organizations should consider implementing strict input validation and sanitization measures to mitigate risks. Monitoring for unusual behavior and suspected exploitation attempts is also recommended during the transition to updated software.
For a comprehensive approach, organizations can validate remediation by engaging in penetration testing to identify similar weaknesses.
Detection Guidance
To detect potential exploitation attempts related to this vulnerability, organizations should monitor logs for unusual input patterns and error messages related to the HTML sanitizer. Additionally, behavioral anomalies in user sessions may indicate attempts to leverage this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2023-47125 highlights a significant trend in web application vulnerabilities, particularly concerning input validation and output encoding failures. Security teams should ensure robust validation mechanisms are in place to prevent similar vulnerabilities in the future. Furthermore, this incident underscores the necessity for continuous security assessments and updates to maintain a secure web environment.
For further reading on protecting your applications, explore our resources on vulnerability management and consider engaging in continuous penetration testing to stay ahead of emerging threats.
Lastly, to understand the broader context of cybersecurity trends, review insights on penetration testing methodologies and their importance in identifying vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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