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CVE-2021-33394: Medium Vulnerability in Cubecart 6.4.2

Cubecart 6.4.2 is affected by a medium severity session fixation vulnerability that could allow attackers to hijack user sessions. Organizations should prioritize patching to mitigate potential risks.

MEDIUMCVSS 5.4 · Published May 27, 2021

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Cubecart version 6.4.2 is vulnerable to a session fixation attack, where the application fails to generate a new session cookie after user login. This flaw allows attackers to create and inject a new session cookie, which becomes valid after the victim logs in, enabling unauthorized access to the user's account through the active session.

With a CVSS score of 5.4, this vulnerability falls under the medium severity category. The attack vector is network-based, with a low attack complexity and requires low privileges. The potential impact on confidentiality and integrity is classified as low, while availability is unaffected.

The urgency for organizations to address this vulnerability is significant. Failure to patch this flaw could allow attackers to exploit it and gain unauthorized access to sensitive user accounts.

Currently, there is no confirmed public exploit for this vulnerability. However, organizations should remain vigilant as the situation evolves and ensure that their systems are updated.

Organizations should prioritize patching immediately.

Vulnerability Details

The official CVE description states that Cubecart 6.4.2 allows for session fixation due to its failure to create a new session cookie upon user login. This vulnerability has been classified as CWE-384.

The CVSS 3.1 vector string for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N, resulting in a base score of 5.4, indicating medium severity.

The vulnerability affects Cubecart version 6.4.2, as confirmed by the vendor.

The vulnerability was published on May 27, 2021.

Technical Analysis

The root cause of this vulnerability lies in the application's logic, which does not invalidate or regenerate session cookies after a user logs in. When a malicious user can create a session cookie and inject it into a victim's session, they effectively hijack the user's authenticated state.

The attack vector is network-based, meaning that an attacker does not need to be physically present on the local network to exploit this vulnerability. The complexity of the attack is low, requiring only basic knowledge of how session management works.

As the attacker requires low privileges to exploit this vulnerability, the potential impact could allow unauthorized users to access sensitive information. User interaction is not necessary for this attack to succeed.

Confidentiality and integrity impacts are both classified as low due to the nature of the data potentially compromised, while availability remains unaffected.

Risk & Impact Analysis

The risk to organizations includes potential unauthorized access to user accounts, which could lead to data breaches and loss of user trust. Given that session management is a critical aspect of web application security, this vulnerability poses a significant threat.

Organizations should assess the potential blast radius of this vulnerability, particularly those that utilize Cubecart for e-commerce or sensitive applications. The urgency of remediation is assessed as medium, given the CVSS score and the nature of the vulnerability.

Security teams should prioritize addressing this vulnerability in their patch cycle to mitigate risks effectively.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

Cubecart version 6.4.2 is affected. Organizations should ensure they are running versions that have been patched for this vulnerability.

Mitigation & Remediation

To remediate this vulnerability, organizations should update to the latest version of Cubecart that addresses this session fixation issue. As a temporary workaround, organizations can implement session cookie management policies that ensure new session tokens are generated after user authentication.

For more information on security testing, organizations may refer to the penetration testing services offered by AppSecure.

Detection Guidance

Organizations should monitor logs for any unusual session activity, particularly after user logins. Anomalies such as sudden changes in session IDs or cookie values should be investigated. Additionally, monitoring for unauthorized access attempts can help identify potential exploitation.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2021-33394 highlights the need for robust session management practices in web applications. It represents a trend where attackers seek to exploit weaknesses in session handling to gain unauthorized access.

Security teams should implement secure coding practices to prevent such vulnerabilities from arising in the future. Regular audits and penetration tests can uncover similar weaknesses before they are exploited.

For further reading on security evaluation, consider the following articles: penetration testing methodology, vulnerability management program, and continuous penetration testing for improved security practices.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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