An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked. This vulnerability has been assigned a CVSS score of 7.8, categorizing it as high severity. The risk to organizations includes potential exploitation leading to logic errors, which may compromise the integrity of applications relying on libxml2.
Organizations should prioritize patching immediately. The vulnerability affects multiple products, including Apple's iOS, macOS, and various NetApp solutions that utilize libxml2. The attack vector is local, necessitating user interaction, which adds complexity to the exploit process.
As of now, there are no known exploits publicly available for this vulnerability, and it is not listed in the KEV catalog. However, the lack of public exploits does not diminish the need for immediate remediation.
Organizations using affected versions of libxml2, including those integrated into various Apple and NetApp products, should conduct assessments to identify exposure and implement necessary updates.
Vulnerability Details
The vulnerability, classified under CWE-415, indicates a potential for double-free errors, which can lead to undefined behavior in applications. The official CVE description notes the risk associated with certain invalid XML entity definitions that can corrupt a hash table key. The CVSS score of 7.8 reflects the high severity of this vulnerability, as it impacts confidentiality, integrity, and availability.
Technical Analysis
The root cause of this vulnerability lies in the handling of XML entity definitions within libxml2. The attack vector is local, requiring the attacker to have access to the system. The complexity of the attack is low, but it does require user interaction to trigger the exploit.
The impacts of this vulnerability are significant, as it can lead to a complete compromise of application integrity. Confidentiality and availability are also at risk due to potential crashes and logic errors.
Risk & Impact Analysis
The real-world risk associated with CVE-2022-40304 is considerable, especially for organizations utilizing Apple and NetApp products that incorporate libxml2. The potential for exploitation, while currently low due to the absence of public exploits, remains a concern for security teams. Organizations should assess their exposure and prioritize remediation, particularly given the high CVSS score.
The urgency for remediation is high, as failing to address this vulnerability could result in significant operational disruptions and data integrity issues.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of libxml2 prior to 2.10.3, as well as various Apple and NetApp products that utilize this component. Organizations should ensure they are using patched versions to mitigate risk.
Mitigation & Remediation
Organizations should update to libxml2 version 2.10.3 or later. For those unable to patch immediately, consider implementing configuration hardening and network controls to limit exposure. Continuous monitoring should also be established to identify any unauthorized activity.
For more information on effective remediation strategies, organizations can refer to penetration testing methodologies.
Detection Guidance
Security teams should monitor logs for indicators of compromise, including unexpected application crashes or erratic behavior. Behavioral anomalies in applications using libxml2 should also be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-40304 highlights the importance of rigorous validation of input data within applications. This vulnerability serves as a reminder of the potential risks associated with XML parsing and the necessity for secure coding practices.
Security teams should take this opportunity to review their application security assessments and ensure adequate protection against similar vulnerabilities by implementing best practices in secure coding.
For additional insights on application security, organizations can explore our resources on application security assessments and vulnerability management programs.
Lastly, organizations should remain vigilant and adapt their security measures as new threats emerge, ensuring a proactive approach to cybersecurity.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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