Libjpeg-turbo versions 2.0.91 and 2.0.90 is vulnerable to a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image. This vulnerability presents a medium severity level with a CVSS score of 6.5, indicating a real risk to organizations that utilize these versions of Libjpeg-turbo, particularly in environments where crafted GIF images may be processed.
The potential impact of this vulnerability includes significant disruption of services, as the availability impact is rated as high. Attackers may leverage this vulnerability to cause a denial of service condition, effectively rendering applications that depend on Libjpeg-turbo inoperable. As such, organizations should prioritize patching immediately.
As of now, there are no known exploits publicly available for this vulnerability, which may mitigate immediate risk. However, organizations should remain vigilant, as the landscape of vulnerabilities can change rapidly. It is crucial to address this in the priority patch cycle to prevent any potential exploitation.
Given the nature of this vulnerability and the potential for significant impact, organizations utilizing Libjpeg-turbo should assess their exposure and take appropriate action to remediate this vulnerability as soon as possible.
Vulnerability Details
The CVE description states that Libjpeg-turbo versions 2.0.91 and 2.0.90 are affected by a denial of service vulnerability caused by a divide by zero when processing a crafted GIF image. This vulnerability has been classified under CWE-369.
The CVSS score for this vulnerability is 6.5, which categorizes it as medium severity. This score reflects a network attack vector, low attack complexity, no privileges required, and a requirement for user interaction.
This vulnerability affects specific versions of the software, namely Libjpeg-turbo versions 2.0.90 and 2.0.91, and is associated with the Fedora operating system version 34.
The publication date of this vulnerability is March 10, 2021.
Technical Analysis
The root cause of this vulnerability stems from improper handling of crafted GIF images, leading to a divide by zero error. The attack vector is network-based, meaning that an attacker could exploit this vulnerability remotely by sending specially crafted GIF images to a service utilizing Libjpeg-turbo.
The attack complexity is rated as low, indicating that exploiting this vulnerability does not require advanced skill. Additionally, no privileges are required to exploit the vulnerability, which increases the risk profile.
User interaction is required, as the crafted images must be processed by the application. However, the availability impact is rated high, meaning that successful exploitation can result in significant service disruption.
Confidentiality and integrity impacts are rated as none, indicating that sensitive information is not at risk due to this vulnerability. However, the high availability impact poses a real threat to services reliant on this component.
Risk & Impact Analysis
The risk to organizations includes service disruption due to the denial of service vulnerability. Organizations utilizing Libjpeg-turbo in their applications may face downtime, which can lead to loss of revenue and customer trust.
The blast radius of this vulnerability can be substantial if not addressed, particularly for applications widely used across different sectors. The urgency assessment is medium, as organizations should schedule remediation within their patch cycles without delay.
Given the potential for denial of service, organizations should not underestimate the need for timely remediation. Immediate attention is necessary to prevent exploitation and ensure continuous service availability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Libjpeg-turbo versions 2.0.90 and 2.0.91. Additionally, it impacts Fedora version 34. Organizations using these specific versions should prioritize updates to mitigate risk.
Mitigation & Remediation
Organizations should apply patches to the affected versions of Libjpeg-turbo. The remediation involves upgrading to versions that are not susceptible to the identified vulnerability. If patches are not available, organizations should consider implementing configuration hardening to mitigate potential exploitation.
For comprehensive security, organizations can validate remediation effectiveness through penetration testing to identify similar weaknesses.
Detection Guidance
Organizations should monitor logs for any indicators of attempts to process crafted GIF images. Behavioral anomalies in the application’s image processing functions should also be tracked. Additionally, network signatures related to image processing requests can help detect potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the importance of robust image processing libraries in modern applications. Organizations should remain vigilant as vulnerabilities in widely-used libraries can have cascading effects across multiple applications.
This incident underscores the necessity for continuous monitoring and timely updates of software dependencies. Organizations are encouraged to develop a proactive approach towards vulnerability management and remediation.
For further guidance on vulnerability management, organizations can refer to best practices through our vulnerability management program resources.
Additionally, our penetration testing methodology can help organizations understand how to assess their security posture effectively.
Organizations should also consider implementing web application penetration testing to uncover vulnerabilities in their overall application environment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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