Versions of the package angular from 1.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the $resource service due to the usage of an insecure regular expression. Exploiting this vulnerability is possible by a large carefully-crafted input, which can result in catastrophic backtracking. With a CVSS score of 5.3, this vulnerability is classified as medium severity.
Risk to organizations includes potential service interruptions, as this vulnerability allows attackers to exploit the application by sending specially crafted inputs that could lead to denial of service. Organizations should prioritize patching immediately.
Monitoring for this vulnerability is essential, especially in environments where AngularJS is deployed. As of the publication date, there are no known exploits publicly available, but the potential for misuse exists.
Organizations using affected versions should address this vulnerability in their priority patch cycle to maintain application availability and security.
Vulnerability Details
This vulnerability allows for Regular Expression Denial of Service (ReDoS) due to the usage of an insecure regular expression within the $resource service in AngularJS. It affects all versions from 1.0.0 up to 1.8.3. The CVSS score of 5.3 indicates a medium severity, with a low attack complexity and no privileges required for exploitation.
Technical Analysis
The root cause of this vulnerability is the insecure construction of regular expressions used by the $resource service, which can lead to catastrophic backtracking when processing large input data. The attack vector is network-based, and the complexity is low, requiring no privileges or user interaction. The impact on availability is low, as the service may become unresponsive under certain conditions.
Risk & Impact Analysis
Real-world deployment risk includes potential denial of service attacks that could affect the availability of applications relying on AngularJS. Organizations should be aware of the blast radius, as the vulnerability can impact any application using the affected versions across various environments. Given the CVSS score, organizations should address this in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include all versions of angular from 1.0.0 through 1.8.3. Organizations should ensure they are not using these versions or apply necessary patches.
Mitigation & Remediation
Organizations should update to the fixed version of AngularJS to mitigate this vulnerability. Patching should be prioritized, and if patches are not available, consider implementing workarounds by restricting input sizes or sanitizing user inputs. For more detailed strategies, organizations can refer to penetration testing to identify potential weaknesses.
Detection Guidance
Monitoring logs for unusual input patterns or excessive resource consumption can help detect exploitation attempts. Look for behavioral anomalies associated with user input processing.
AppSecure Threat Intelligence Insight
This vulnerability underscores the importance of secure coding practices, particularly with user input handling. As organizations increasingly rely on frameworks like AngularJS, understanding and mitigating risks associated with regular expressions is crucial. Security teams should consider reviewing their coding standards and enforcing rigorous testing practices to prevent similar vulnerabilities.
For further details on security best practices, organizations can explore penetration testing methodology, and how to enhance their security posture through regular assessments.
Additionally, stay updated on emerging threats and vulnerabilities by following relevant security publications and advisories, such as those available through vulnerability management programs to ensure a proactive defense against potential attacks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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