CVE-2024-47764: Medium Vulnerability in HTTP Cookie Parser

CVE-2024-47764 is a medium-severity vulnerability affecting the HTTP cookie parser and serializer known as 'cookie'. This vulnerability allows the cookie name to be used to set other fields of the cookie, resulting in an unexpected cookie value. Additionally, a similar escape can be exploited for the path and domain fields, which could be abused to alter other cookie fields, potentially leading to security breaches.

The vulnerability has a CVSS score of 6.9, indicating a medium level of severity. Organizations utilizing this cookie parser should be aware of the potential risks associated with improper cookie handling. The publication date for this vulnerability was October 4, 2024, and it is currently classified as 'Awaiting Analysis'.

Given its nature, organizations should prioritize patching immediately and upgrade to version 0.7.0, which includes updates for the validation of name, path, and domain fields to mitigate this vulnerability effectively.

Risk to organizations includes the potential for unauthorized access and manipulation of cookie data, which may lead to broader security implications if exploited.

As of now, there is no known public exploit or proof of concept available for this vulnerability. However, organizations should remain vigilant and monitor for any developments.

Organizations are encouraged to implement robust security practices and ensure their software components are up-to-date to prevent exploitation of vulnerabilities such as CVE-2024-47764.

Vulnerability Details

CVE-2024-47764 is characterized by improper validation of cookie fields, particularly the name, path, and domain. This vulnerability falls under the Common Weakness Enumeration (CWE) classification CWE-74, which relates to improper neutrality in input validation. The attack vector for this vulnerability is classified as NETWORK, with low attack complexity and no privileges required to exploit.

The CVSS vector for this vulnerability reflects a low attack complexity with no user interaction required. The integrity impact is low, indicating that an attacker may be able to alter the integrity of the cookie without affecting confidentiality and availability.

Technical Analysis

The root cause of CVE-2024-47764 lies in the insufficient validation of cookie fields within the HTTP cookie parser. Attackers may leverage this vulnerability to manipulate cookie values, which could lead to unintentional data exposure or modification.

The attack vector is classified as NETWORK, allowing attackers to exploit this vulnerability remotely over the internet without requiring physical access to the system. The attack complexity is low, meaning that the vulnerability can be exploited easily without advanced technical skills.

No privileges are required, and user interaction is not necessary to exploit this vulnerability, making it particularly concerning for organizations relying on this cookie parser.

Given the nature of the vulnerability, the confidentiality impact is none, while the integrity impact is low, indicating that attackers may alter cookie data without compromising the overall system integrity.

Risk & Impact Analysis

Real-world deployment risk from CVE-2024-47764 primarily relates to applications that rely on the affected cookie parser for session management or data integrity. If exploited, attackers could manipulate session cookies and impersonate legitimate users, leading to unauthorized access.

This vulnerability's significance cannot be overstated, particularly for organizations in sectors dealing with sensitive user data, such as finance and healthcare. The potential blast radius can be substantial, as a successful attack could compromise multiple user accounts, leading to data breaches.

The urgency for organizations to address this vulnerability is highlighted by its medium CVSS score of 6.9. Organizations should prioritize remediation and ensure they are using the updated version to mitigate risks effectively.

Exploitation Status

Affected Versions

Organizations using the cookie parser should upgrade to version 0.7.0 to address this vulnerability. All versions prior to this patch are affected.

Mitigation & Remediation

To mitigate CVE-2024-47764, organizations should upgrade to version 0.7.0 of the cookie parser. This version includes updated validation for cookie fields, addressing the identified vulnerabilities.

If immediate patching is not possible, organizations should implement configuration hardening by validating cookie inputs and controlling the domains and paths that cookies can be set to.

Additionally, monitoring for unusual cookie behavior and conducting regular security assessments can aid in identifying potential exploitation attempts.

Application security assessments can also be beneficial in identifying weaknesses associated with cookie management.

Detection Guidance

Organizations should monitor logs for any unusual cookie manipulation attempts. Behavioral anomalies, such as unexpected or malformed cookie values, should be flagged for further investigation.

Network signatures that indicate abnormal cookie traffic or manipulation can also be established to aid in detection.

AppSecure Threat Intelligence Insight

CVE-2024-47764 highlights the importance of robust validation mechanisms within web applications. As web technologies evolve, vulnerabilities related to cookie management remain prevalent.

Security teams should adopt a proactive approach to cookie handling and consider implementing strict validation practices to mitigate risks effectively.

For further reading on web application security best practices, organizations can refer to our comprehensive web application penetration testing guide.

Additionally, organizations should remain informed about the latest security trends and vulnerabilities through continuous education and training initiatives for their security teams.

Understanding and addressing vulnerabilities like CVE-2024-47764 can significantly enhance an organization's overall security posture.