CVE-2021-40265 is a high-severity vulnerability that affects the FreeImage library prior to version 1.18.0. The vulnerability is characterized as a heap overflow bug, which exists in the ofLoad function located in PluginJPEG.cpp. This flaw presents a significant risk, as it can lead to potential exploitation by attackers, impacting the confidentiality, integrity, and availability of affected systems.
The CVSS score for this vulnerability is 8.8, indicating a high severity level. The attack vector is classified as network-based, with low complexity and no privileges required. However, user interaction is necessary to exploit this vulnerability, which increases the importance of awareness and preventive measures among users and administrators alike.
Risk to organizations includes potential unauthorized access to sensitive data, system crashes, and other disruptions. Given the critical nature of this vulnerability, organizations should prioritize patching immediately.
As of the latest information, there are no known public exploits available for this vulnerability, and it does not appear in the Known Exploited Vulnerabilities (KEV) catalog. Nevertheless, the potential impact of this vulnerability necessitates immediate attention.
Vulnerability Details
The official description of CVE-2021-40265 details that a heap overflow bug exists in FreeImage before version 1.18.0, specifically through the ofLoad function in PluginJPEG.cpp. The vulnerability is classified under CWE-787, which denotes improper control of a resource through its lifetime.
The CVSS score of 8.8 indicates a high severity, emphasizing the critical nature of this vulnerability. The attack vector is network-based, meaning that an attacker could exploit it remotely. The attack complexity is rated as low, and no privileges are required for exploitation, although user interaction is necessary.
The affected product is FreeImage, with the vulnerability impacting all versions prior to the vendor's patch, which is version 1.18.0. The vulnerability was published on August 22, 2023.
Technical Analysis
The root cause of the vulnerability lies in a heap overflow condition that can occur when the ofLoad function processes certain inputs. Attackers may leverage this condition to execute arbitrary code or crash the application, thereby compromising system stability.
The attack vector is network-based, meaning an attacker could potentially exploit the vulnerability over a network connection. The attack complexity is rated as low, indicating that the means to exploit this vulnerability is readily available to attackers. Moreover, no special privileges are required to exploit this vulnerability, though user interaction is necessary to trigger the flaw.
The confidentiality impact is rated as high, indicating that sensitive information may be disclosed as a result of exploitation. The integrity impact is also high, suggesting that attackers could modify data arbitrarily. Finally, the availability impact is high, meaning that exploitation could lead to denial of service.
Risk & Impact Analysis
Organizations that utilize FreeImage should be acutely aware of the risks associated with CVE-2021-40265. The vulnerability's ability to cause heap overflow can lead to severe consequences, including unauthorized access to sensitive data, system crashes, and disruptions to applications reliant on the FreeImage library.
The blast radius of this vulnerability can extend to any application utilizing FreeImage, highlighting the wide-reaching potential for impact. Given the CVSS score of 8.8, organizations should assess their risk posture and prioritize remediation efforts.
Organizations should address this vulnerability in their priority patch cycle to mitigate the risk of exploitation. The lack of confirmed public exploits does not diminish the need for prompt action, as the potential for exploitation remains a concern.
Regular monitoring for updates and implementing security best practices can help organizations safeguard against potential exploitation of this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The FreeImage library is affected by this vulnerability in all versions prior to 1.18.0. Organizations using versions before this patch should update to mitigate the risk associated with CVE-2021-40265.
Mitigation & Remediation
Organizations should upgrade to FreeImage version 1.18.0 or later to address the vulnerability. In cases where an immediate upgrade is not feasible, organizations should implement configuration hardening and monitor systems for abnormal activities that may indicate exploitation attempts.
For continuous security assurance, organizations can utilize continuous security testing to validate the effectiveness of their remediation efforts.
Detection Guidance
Organizations should monitor logs for indicators related to abnormal memory usage that may suggest heap overflow attempts. Behavioral anomalies in applications using FreeImage may also indicate ongoing exploitation efforts. Network signatures should be established to detect malicious traffic targeting vulnerable FreeImage instances.
AppSecure Threat Intelligence Insight
The CVE-2021-40265 vulnerability highlights the ongoing need for vigilance in software management and patching. As vulnerabilities continue to emerge, security teams must adopt proactive measures to protect their applications.
For insights on effective vulnerability management, organizations can refer to our vulnerability management program, which offers strategies for identifying, assessing, and remediating software vulnerabilities.
Additionally, understanding the penetration testing process can aid organizations in their security posture. Consider exploring our penetration testing methodology for comprehensive insights.
Lastly, for teams looking to enhance their security framework, our resources on API penetration testing provide valuable guidance.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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