The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value. This vulnerability allows attackers to trigger excessive resource consumption, potentially leading to service unavailability.
The severity of this vulnerability is classified as medium, with a CVSS score of 5.3. This reflects the potential for low complexity attacks that do not require user interaction, making it feasible for attackers to exploit this vulnerability in a networked environment.
Risk to organizations includes potential service disruption due to denial of service. Given that this package has been deprecated and is no longer maintained, organizations using affected versions are at greater risk of unaddressed vulnerabilities.
Organizations should prioritize patching immediately, especially those using versions 1.7.0 and higher.
No public exploit has been confirmed for this vulnerability, and it is not actively exploited in the wild, but the potential for exploitation remains.
This vulnerability affects multiple vendors, including angularjs, fedoraproject, and netapp, which may further complicate remediation efforts.
Organizations should assess the impact of this vulnerability within their environments and take appropriate steps to mitigate the risk.
Vulnerability Details
The vulnerability is officially described as follows: The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value.
The affected product is AngularJS, with the vulnerability classified under CWE-1333.
The vulnerability affects all versions starting from 1.7.0, as confirmed by multiple sources.
Technical Analysis
The root cause of this vulnerability lies in the way the AngularJS package handles custom locale rules. By providing a high value for the parameter in posPre, attackers can exploit the regular expression processing, leading to excessive resource consumption.
The attack vector is classified as NETWORK, indicating that the vulnerability can be exploited remotely without requiring physical access to the system.
The attack complexity is low, as attackers do not need special privileges or user interaction to exploit this vulnerability. The impact on availability is rated as LOW, reflecting the potential service disruption caused by successful exploitation.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is significant, especially for organizations that have not transitioned to maintained versions of AngularJS. The risk of denial of service could lead to substantial operational disruptions.
The blast radius for this vulnerability is considerable, given that AngularJS is widely used in web applications across various industries. The potential for widespread exploitation highlights the urgency of addressing this vulnerability.
As this vulnerability does not currently have known exploits, the urgency can be categorized as medium. However, organizations should still take proactive measures to mitigate any potential risks associated with this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions include AngularJS version 1.7.0 and higher. Additionally, affected systems include Fedora versions 35 and 36, as well as NetApp's ONTAP Select Deploy Administration Utility.
Mitigation & Remediation
Organizations should upgrade to a patched version of AngularJS that is no longer vulnerable. As the package is deprecated, alternatives should be considered. For those still using this package, applying strict input validation and limiting the values for locale rules can mitigate the risk.
Monitoring application logs for unexpected behavior can also help in identifying potential exploitation attempts.
For further guidance on testing and validating security measures, organizations may consider engaging in penetration testing to ensure compliance with security best practices.
Detection Guidance
Organizations should monitor system logs for unusual patterns or spikes in resource usage. Additionally, network signatures can be established to detect potential exploitation attempts targeting this vulnerability.
Behavioral anomalies in application performance, especially during high input scenarios, may indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-25844 lies in its representation of common weaknesses in web frameworks that handle user input and localization rules. This case underscores the importance of strong validation mechanisms to prevent denial of service vulnerabilities.
Security teams should take lessons from this vulnerability to implement robust security measures, particularly in managing how user-defined rules are processed.
For further reading on related topics, organizations can refer to API penetration testing and cloud penetration testing methodologies to enhance application security.
Finally, organizations should stay updated on the latest trends in vulnerability management to better prepare for future threats, as discussed in vulnerability management programs. Staying informed will aid in reducing exposure to similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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