CVE-2025-13601 is a high-severity vulnerability affecting various products from Red Hat, including glib, codeready_linux_builder, and openshift_container_platform. This vulnerability allows a heap-based buffer overflow due to an incorrect calculation of buffer size in the g_escape_uri_string() function. The flaw can occur when the escape string contains an excessive number of characters that need to be escaped, leading to a possible overflow and subsequent write off the end of the allocated string. With a CVSS score of 7.7, this vulnerability represents a significant risk to the integrity and availability of affected systems.
Risk to organizations includes unauthorized access or modification of data, which can have severe operational consequences. As this vulnerability is classified as high severity, organizations should prioritize patching immediately to defend against potential exploitation. Currently, there are no known exploits or public proof of concepts available for this vulnerability, but the exploitability score indicates a high potential for exploitation.
With the publication date on November 26, 2025, and a status of 'Modified', it highlights the importance of staying updated with security advisories and applying necessary patches. Organizations that utilize affected products should be aware of this vulnerability and take immediate action to ensure their systems remain secure.
The urgency for defenders to act cannot be understated, as ongoing vigilance and proactive measures are essential in the current threat landscape.
Vulnerability Details
The official description of this vulnerability states that a heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string. This vulnerability has been classified under CWE-190.
The CVSS score is 7.7, indicating a high severity level. This score reflects the potential impact on the confidentiality, integrity, and availability of the affected systems. The attack vector is classified as LOCAL, requiring local access to the system. The attack complexity is low, with no privileges required and no user interaction necessary.
The confidentiality impact is rated as NONE, while the integrity and availability impacts are rated as HIGH. This suggests that while data confidentiality may not be directly compromised, the integrity and availability of the system could be severely affected.
Technical Analysis
The root cause of the CVE-2025-13601 vulnerability lies in the handling of buffer sizes within the g_escape_uri_string() function. When the function attempts to escape a string containing numerous unacceptable characters, the calculation of the required buffer size can overflow. This type of flaw is typical in memory management errors, where improper calculations lead to heap corruption.
The attack vector for this vulnerability is LOCAL, meaning that an attacker must have local access to the system to exploit the vulnerability. The complexity of the attack is low, as no special conditions or privileges are required to trigger the overflow. Additionally, no user interaction is needed, making it easier for an attacker to exploit this vulnerability if they have access to the affected systems.
The impacts on the system's integrity and availability are significant. An attacker exploiting this vulnerability could potentially corrupt data or cause denial of service through resource exhaustion. This highlights the critical need for organizations to monitor and remediate their systems promptly.
Risk & Impact Analysis
Real-world deployment risk is substantial for organizations utilizing the affected products. The potential for an attacker to exploit this vulnerability underscores the importance of understanding the systems in use and the configurations that could be exploited. The blast radius potential is also significant, as this could lead to widespread impact on the integrity and availability of services relying on the affected components.
In light of the vulnerability's characteristics and the potential for exploitation, organizations should prioritize remediation efforts. The CVSS score of 7.7 indicates this vulnerability should be addressed in the priority patch cycle. Organizations may also need to consider their overall security posture to mitigate similar vulnerabilities in the future.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected, specifically the following components: ceph_storage, codeready_linux_builder, and openshift_container_platform across various architectures. Ensure that systems are updated to the latest versions provided by Red Hat to mitigate this vulnerability.
Mitigation & Remediation
To mitigate the risk associated with CVE-2025-13601, organizations should apply the latest patches provided by Red Hat for the affected components. For those unable to immediately update, consider implementing configuration hardening and restricting access to systems where the affected software is installed. Additionally, continuous monitoring of systems for unusual behavior can help detect any potential exploitation attempts.
For comprehensive security assessments, organizations are encouraged to use penetration testing to validate their defenses against such vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators of exploitation, such as abnormal access patterns or system crashes. Behavioral anomalies, particularly those involving unexpected resource usage, should also be flagged for further investigation. Network signatures that correlate with known exploitation techniques can assist in identifying potential attempts to leverage this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2025-13601 represents a critical vulnerability within widely used Red Hat products that could lead to significant integrity and availability risks. Security teams should recognize this vulnerability as part of a broader trend in software vulnerabilities where memory management errors can lead to severe consequences.
Organizations are encouraged to continuously assess their security posture and invest in proactive security measures. For additional resources on strengthening application security, teams can refer to penetration testing methodology and best practices on vulnerability management programs to ensure robust defenses.
Lastly, staying informed through regular updates from security advisories and threat intelligence can help organizations mitigate risks associated with vulnerabilities such as CVE-2025-13601.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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