A CRLF Injection vulnerability in Ivanti Connect Secure (9.x, 22.x) allows an authenticated high-privileged user to inject malicious code on a victim’s browser, thereby leading to cross-site scripting attacks. The CVSS score for this vulnerability is 8.2, indicating a high severity level. This means that the potential impact of an exploit could lead to significant risks for organizations, especially given the nature of cross-site scripting vulnerabilities.
Risk to organizations includes the potential for unauthorized access to sensitive information, session hijacking, and other security breaches as attackers may leverage this vulnerability to execute scripts in the context of the victim’s session. The vulnerability is currently listed as deferred, but organizations should not underestimate its potential impact.
Organizations should prioritize patching immediately. The vulnerability is classified under CWE-93, indicating a flaw that allows for CRLF injection, which can be exploited through network access with low attack complexity and high privileges required.
Given the exploitation status and the nature of the vulnerability, organizations must take proactive measures to mitigate risks associated with this vulnerability.
Organizations should schedule remediation efforts to ensure that all instances of the affected Ivanti Connect Secure versions are updated to the latest secure versions.
Vulnerability Details
The CRLF Injection vulnerability in Ivanti Connect Secure affects versions 9.x and 22.x. It allows high-privileged authenticated users to inject malicious code into victims' browsers. The official CVE description outlines that this vulnerability can lead to cross-site scripting attacks, which can have severe consequences for user data integrity and confidentiality.
The CVSS score of 8.2 indicates a high-severity vulnerability. The metrics indicate a network attack vector, low attack complexity, and high privileges required for exploitation. The impacts classified under confidentiality and integrity are low, while availability impact is high.
The vulnerability has been assigned CWE-93, which relates to CRLF injection issues that facilitate other attacks such as cross-site scripting.
Technical Analysis
The root cause of this vulnerability stems from improper handling of CRLF sequences in user inputs, allowing an attacker to manipulate headers or scripts. The attack vector is network-based, meaning that an attacker could exploit this from a remote location without requiring physical access to the system.
The attack complexity is low, as it does not require significant resources or special conditions for exploitation. The privileges required are high, indicating that only authenticated users with elevated privileges can exploit this vulnerability. No user interaction is required, making it more dangerous.
The confidentiality impact is low, while integrity impact is also low; however, the availability impact is high, as successful exploitation can lead to denial of service or disruption of services.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant. Attackers leveraging this flaw can manipulate user sessions and execute malicious scripts, potentially leading to data theft or further exploitation within the network.
This matters greatly to organizations as the potential blast radius includes all users interacting with the compromised system. The urgency for organizations to act depends on the CVSS score, which indicates a high risk. Organizations should prioritize addressing this vulnerability in their patch cycle, especially given the potential for exploitation.
The vulnerability's status as deferred should not deter organizations from taking immediate action to mitigate the risk.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include Ivanti Connect Secure 9.x and 22.x. Organizations should ensure they are running the latest secure versions to mitigate this vulnerability. If version information is missing, it is recommended to state that all versions prior to the vendor patch are affected.
Mitigation & Remediation
Organizations should apply the latest patches provided by Ivanti to remediate this vulnerability. In cases where patches are not available, organizations should look into configuration hardening measures to minimize the risks, such as restricting access to high-privileged user accounts and monitoring logs for any suspicious activity.
In addition to patching, organizations may consider using penetration testing to validate the security posture of their systems against such vulnerabilities.
Periodic review of security configurations and employee training on security best practices can also help reduce the risk of exploitation.
Detection Guidance
Organizations should monitor logs for unusual activity that may indicate exploitation attempts. Key indicators can include unexpected changes in user sessions, unauthorized access attempts, and unusual error messages.
Behavioral anomalies within user sessions should be flagged for further investigation. Additionally, monitoring network traffic can help identify potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to be exploited by attackers to gain unauthorized access and manipulate user data. Security teams should learn from this incident to enhance their security measures against similar vulnerabilities.
This incident reflects a pattern of vulnerabilities that arise from inadequate input validation, highlighting the need for robust security practices in application development.
Organizations should focus on implementing best practices for secure coding and conduct regular security assessments to identify vulnerabilities early in the development lifecycle.
For further information on strengthening your security practices, organizations can refer to resources on penetration testing methodologies and vulnerability management programs to enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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