A flaw was found in Undertow, which incorrectly parses cookies with certain value-delimiting characters in incoming requests. This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification. The main threat from this flaw impacts data confidentiality and integrity.
The vulnerability has been assigned a CVSS score of 7.4, categorizing it as high severity. This score indicates that exploitation could significantly impact an organization's sensitive data. Given the nature of the vulnerability, organizations should prioritize patching immediately to avoid potential exploitation.
As of now, this vulnerability is classified as deferred, meaning it has not yet been actively exploited in the wild. However, the potential for attackers to leverage this flaw to compromise data integrity and confidentiality remains a concern.
Organizations are encouraged to stay informed about this vulnerability and monitor for any updates or patches that may be released by the vendor. Taking proactive steps now can mitigate the risks associated with this flaw.
Vulnerability Details
A flaw was found in Undertow, which incorrectly parses cookies with certain value-delimiting characters in incoming requests. This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification.
The vulnerability is classified under CWE-444. The CVSS score is 7.4, indicating a high severity level, with a high attack vector and high impact on confidentiality and integrity. This vulnerability affects all versions of Undertow prior to any vendor patch.
Technical Analysis
The root cause of this vulnerability lies in the improper parsing of cookies in Undertow. The attack vector is network-based, allowing attackers to exploit the flaw without requiring any user interaction or privileges.
The attack complexity is rated as high, requiring specific conditions to be met for successful exploitation. However, the potential impact of this vulnerability is significant, with high confidentiality and integrity impacts.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive data, potential data breaches, and loss of trust from users. The blast radius could be extensive, affecting all users of the affected systems and potentially leading to widespread data compromise.
Organizations should assess their exposure to this vulnerability, especially those using Undertow in their applications. Given the high CVSS score, organizations must address this vulnerability in their priority patch cycle.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Undertow prior to vendor patch are affected by this vulnerability. Organizations should check for any available updates and apply them as soon as possible.
Mitigation & Remediation
Organizations should prioritize patching immediately. Ensure that all systems using Undertow are updated to the latest version. If patches are not available, consider implementing workarounds such as cookie validation and network controls to mitigate the risk.
For more detailed guidance on securing your applications, organizations can refer to penetration testing practices.
Detection Guidance
Monitoring logs for unusual cookie behavior can help detect potential exploitation. Look for anomalies in cookie values and validate cookie integrity regularly.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to compromise cookie-based authentication mechanisms. Organizations should adopt comprehensive security measures, including regular security assessments and adherence to best practices.
For further insights on managing vulnerabilities, organizations should consider implementing a vulnerability management program. Regular penetration testing can also reveal hidden vulnerabilities.
Additionally, engaging in penetration testing methodologies can help identify potential weaknesses in your security posture.
Organizations should also stay informed about AI security best practices to enhance their defense against emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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