CyberArk Identity versions up to and including 22.1 in the 'StartAuthentication' resource, exposes the response header 'X-CFY-TX-TM'. In certain configurations, that response header contains different, predictable value ranges which can be used to determine whether a user exists in the tenant. This vulnerability allows unauthorized users to infer user existence, potentially leading to further attacks.
The CVSS score for this vulnerability is 5.3, categorizing it as medium severity. Organizations utilizing affected versions should assess their exposure to this vulnerability as it poses a risk to confidentiality by potentially allowing attackers to identify valid users.
Currently, there are no known exploits for this vulnerability, and it is not listed in the Known Exploited Vulnerabilities (KEV) catalog. However, the predictable nature of the header values presents a security concern that organizations should not overlook.
Organizations should prioritize patching immediately to mitigate this risk. Remediation efforts should focus on upgrading to the latest version of CyberArk Identity that resolves this vulnerability.
Vulnerability Details
CyberArk Identity versions up to and including 22.1 are affected by this vulnerability. The specific vulnerability type is classified under CWE-330, which pertains to exposure of sensitive information via a response header.
The CVSS 3.1 vector string for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. This indicates that the attack vector is network-based, with low complexity and no privileges required for an attacker to exploit the vulnerability.
The vulnerability was published on March 3, 2022, and has since been modified. Organizations should ensure they are running the latest version of CyberArk Identity to avoid exposure to this vulnerability.
Technical Analysis
The root cause of this vulnerability arises from the exposure of the response header 'X-CFY-TX-TM', which can contain predictable values. As a result, attackers may determine the existence of users within the tenant based on the header's contents.
The attack vector is network-based, meaning that an attacker could exploit the vulnerability remotely without needing physical access to the system. The complexity of the attack is low, as no special skills or knowledge are required to exploit this vulnerability.
There are no privileges required to exploit this vulnerability, and no user interaction is necessary. The impact on confidentiality is low, as it primarily allows attackers to ascertain user existence without compromising any data integrity or availability.
Risk & Impact Analysis
The real-world risk associated with this vulnerability is significant for organizations using CyberArk Identity. Attackers may leverage this vulnerability to gather intelligence about valid users, which could facilitate further attacks such as phishing or unauthorized access attempts.
Organizations should be aware of the potential blast radius of this vulnerability, as it affects all instances of CyberArk Identity versions up to and including 22.1. The urgency to address this vulnerability is high, as it is crucial to prevent attackers from using this information to compromise sensitive systems.
Given the medium CVSS score of 5.3, organizations should treat the remediation of this vulnerability as a priority in their patch management cycle. Ensuring that the latest security updates are applied will help mitigate the identified risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of CyberArk Identity prior to version 22.2 are affected by this vulnerability. Organizations should ensure they are running the latest patched version to mitigate risks.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to CyberArk Identity version 22.2 or later, which addresses this issue. In cases where immediate upgrading is not possible, consider implementing network controls to restrict access to the affected services.
Monitoring for unusual access patterns and logging response headers can also help in identifying potential exploitation attempts. For further assistance, organizations may consider engaging in penetration testing to evaluate their security posture.
Detection Guidance
Organizations should monitor logs for any instances of the response header 'X-CFY-TX-TM' and analyze patterns of access to sensitive resources. Behavioral anomalies or repeated requests to the authentication endpoint should be flagged for further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its ability to expose user existence information, which can serve as a stepping stone for more targeted attacks. Organizations must be vigilant in monitoring the use of response headers in their applications.
This vulnerability represents a concerning trend in how configuration issues can lead to information leakage. Security teams should review application configurations to prevent similar vulnerabilities from arising.
The strategic takeaway is to enhance security awareness and training to ensure developers understand the implications of exposing potentially sensitive information. For insights on improving your security practices, refer to our vulnerability management program and our guide on penetration testing methodology to bolster your security measures.
Lastly, organizations should remain updated with security advisories and follow best practices to minimize the risk of information exposure through misconfigurations.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)