CVE-2022-25927 is a medium-severity vulnerability affecting the ua-parser-js package, specifically in versions from 0.7.30 to 0.7.33 and from 0.8.1 to 1.0.33. This vulnerability allows for a Regular Expression Denial of Service (ReDoS) via the trim() function. The impact on organizations can be significant, as it may lead to service interruptions when exploited.
The vulnerability has a CVSS score of 5.3, indicating medium severity. Organizations should be aware of the risks associated with this vulnerability, particularly the potential for service outages. Exploitability is considered medium, and while there is no confirmed public exploit, the existence of a potential exploit raises concerns.
Given the nature of the vulnerability and its impact on availability, organizations should prioritize patching affected versions. Patching is crucial to mitigate the risk of exploitation, as this vulnerability could affect the performance and availability of services relying on the affected package.
Organizations are urged to apply any available patches or updates to the ua-parser-js package. The urgency of this action is reinforced by the fact that this vulnerability can be exploited remotely and without user interaction, making it particularly concerning for web applications.
Vulnerability Details
This vulnerability allows for Regular Expression Denial of Service (ReDoS) via the trim() function. It is classified under CWE-1333 and has a CVSS score of 5.3. The affected product is ua-parser-js, and the vendor is ua-parser-js_project. The vulnerability was published on January 26, 2023.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of regular expressions within the trim() function. Attackers may leverage this flaw to craft specific inputs that cause excessive backtracking, leading to denial of service conditions.
The attack vector is network-based, with low complexity and no privileges required. User interaction is not necessary for the attack to be successful, which increases the risk profile for organizations.
The impact on availability is categorized as low, but the potential for significant service disruption means that organizations should treat this vulnerability with urgency.
Risk & Impact Analysis
Risk to organizations includes potential service interruptions and performance degradation. The availability impact is classified as low, but the circumstances could lead to significant downtime if exploited. The CVSS base score of 5.3 reflects the medium severity of this vulnerability, indicating that organizations should address it in their priority patch cycle.
Organizations should assess their exposure to this vulnerability based on their use of the affected versions of the ua-parser-js package. Given that this vulnerability can be exploited remotely, it poses a real risk to web applications and services.
The urgency for remediation is categorized as medium. Organizations should schedule remediation to ensure that they are not left vulnerable to potential exploits.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the ua-parser-js package are from 0.7.30 and before 0.7.33, as well as from 0.8.1 and before 1.0.33. Organizations should ensure that they are using versions that have been patched.
Mitigation & Remediation
Organizations should prioritize patching the ua-parser-js package to versions that are not vulnerable to this ReDoS vulnerability. The latest versions of the package should be used, and if a patch is unavailable, organizations should consider implementing workarounds such as limiting input size or rate limiting requests to mitigate potential impacts.
Configuration hardening and network controls should also be considered to reduce exposure to this vulnerability. Continuous monitoring for any unusual behavior or performance issues related to the ua-parser-js package may help detect potential exploitation attempts.
For further assistance, organizations may engage in penetration testing services that can help identify additional vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators related to the ua-parser-js package. Behavioral anomalies such as unexpected service downtimes or performance degradation should be flagged for investigation. Network signatures that correspond to known exploit patterns could also be useful in detecting attempted exploits.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-25927 lies in its representation of vulnerabilities that can easily lead to denial of service if not addressed. The pattern of ReDoS vulnerabilities indicates the necessity for rigorous testing of regular expressions, especially in libraries that handle user inputs.
Security teams should take lessons from this vulnerability to enhance their defensive strategies by incorporating regular expression testing into their security assessments. A proactive approach in identifying such weaknesses can significantly reduce the attack surface.
Organizations are encouraged to adopt best practices for penetration testing methodology to identify and remediate vulnerabilities effectively.
Additionally, organizations should consider implementing a comprehensive vulnerability management program that emphasizes regular scanning and monitoring for new vulnerabilities.
Finally, security teams should engage in regular security training to ensure that all personnel are aware of the latest threats and best practices in vulnerability management.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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