libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer dereference in xmlPatMatch in pattern.c. This vulnerability allows attackers to potentially disrupt the application by causing a crash or unexpected behavior, although the risk is considered low given the nature of the issue.
The CVSS score of 2.9 indicates a low severity level, which suggests that while the vulnerability should be addressed, it does not pose an immediate threat to organizations. However, risk to organizations includes potential service disruption and integrity issues that could arise from unpatched systems.
With no known exploits or public proof-of-concept code available, the immediate urgency for defenders is lower, but organizations are encouraged to include this vulnerability in their patch management cycles.
Organizations should schedule remediation for this vulnerability to ensure system stability and reliability, especially if they are using affected versions of libxml2.
Vulnerability Details
The official description notes that this vulnerability affects libxml2 versions prior to 2.12.10 and 2.13.x before 2.13.6. The vulnerability is classified under CWE-476, which pertains to NULL pointer dereferences.
The CVSS 3.1 vector is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L. This indicates the attack vector is local, complexity is high, and no privileges or user interaction are required. The impacts on confidentiality and integrity are none, while availability is rated as low.
The vulnerability was published on February 18, 2025. The low severity of this issue highlights that while it is essential to patch, it may not require immediate action compared to higher severity vulnerabilities.
Technical Analysis
The root cause of this vulnerability is a NULL pointer dereference in the xmlPatMatch function within the source code of libxml2. Attackers may leverage this flaw to cause application crashes or unexpected behaviors.
The attack vector is local, meaning that an attacker would need access to the local environment where the vulnerable application is running. The attack complexity is rated as high, and no privileges are required to exploit this vulnerability, nor is user interaction necessary.
The impacts on confidentiality and integrity are assessed to be none, while the availability impact is rated low. This indicates that while the vulnerability exists, its exploitation is unlikely to have severe consequences.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is relatively low due to the lack of known exploits and the complexity of successfully triggering the issue. However, organizations using libxml2 should remain vigilant, as even low-severity vulnerabilities can be leveraged in combination with other vulnerabilities in a multi-stage attack.
Why this matters to organizations is that any disruption in service due to crashes can lead to a loss of business continuity and impact user trust. The blast radius potential is limited; however, if exploited, it may affect systems utilizing the vulnerable library.
Urgency assessment indicates that while this vulnerability is not critical, organizations should address it in their patch management cycle to maintain security hygiene.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of libxml2 are those prior to 2.12.10 and those from 2.13.0 up to, but not including, 2.13.6. Organizations should ensure they are running a version of libxml2 that has been patched against this vulnerability.
Mitigation & Remediation
Organizations should prioritize applying patches for libxml2 to versions 2.12.10 and 2.13.6 or later. If immediate patching is not feasible, organizations may consider implementing configuration hardening and network controls to limit exposure.
For continuous improvement in security practices, organizations can engage in continuous penetration testing to identify and remediate vulnerabilities in a timely manner.
Additionally, monitoring for behavioral anomalies and establishing a robust incident response plan will aid organizations in effectively managing potential vulnerabilities.
Detection Guidance
To detect exploitation of this vulnerability, organizations should monitor logs for unusual application crashes or error messages related to xmlPatMatch.
Behavioral anomalies, such as unexpected application behavior, can also indicate potential exploitation. Additionally, organizations should consider implementing network signatures that can detect attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in the importance of maintaining robust software practices, including regular updates and vulnerability management.
Patterns in vulnerabilities like CVE-2025-27113 highlight the necessity for security teams to be proactive in identifying and remediating potential weaknesses in their applications.
This case serves as a reminder that even low-severity vulnerabilities can impact overall system security. Security teams are encouraged to adopt a holistic approach to application security, integrating solutions like vulnerability management programs to minimize risks.
Ultimately, the strategic defensive takeaway is to prioritize security hygiene and ensure that all components of the software stack are kept up to date.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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