CVE-2008-5358 in SDKJDK
Summary
by MITRE
Java Runtime Environment (JRE) for Sun JDK and JRE 6 Update 10 and earlier might allow remote attackers to execute arbitrary code via a crafted GIF file that triggers memory corruption during display of the splash screen, possibly related to splashscreen.dll.
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Analysis
by VulDB Data Team • 08/21/2019
The vulnerability identified as CVE-2008-5358 represents a critical memory corruption flaw within the Java Runtime Environment that specifically affects Sun JDK and JRE versions 6 Update 10 and earlier. This security issue manifests through a sophisticated attack vector involving maliciously crafted gif image files that exploit a vulnerability in the splash screen display mechanism. The flaw resides within the splashscreen.dll component which is responsible for rendering splash screens during java application startup processes, making it particularly dangerous as it can be triggered simply by opening a malicious file.
The technical implementation of this vulnerability stems from improper memory handling during the parsing and display of graphics files, specifically targeting the splash screen functionality. When a user opens a specially crafted gif file, the java runtime environment attempts to display the image as a splash screen, but the parsing process fails to properly validate the image data structure, leading to memory corruption that can be exploited by remote attackers. This type of vulnerability falls under the CWE-125 vulnerability category, which describes out-of-bounds read conditions that can result in memory corruption and arbitrary code execution. The attack leverages the inherent trust placed in system components during normal application startup sequences, making it particularly insidious as users may not realize they are triggering an exploit.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete system compromise capabilities through the Java runtime environment. Since Java applications are commonly used across enterprise networks and web applications, this vulnerability could enable attackers to gain unauthorized access to systems, escalate privileges, and potentially establish persistent backdoors. The remote exploitation capability means that attackers can deliver malicious gif files through various vectors including email attachments, compromised websites, or file sharing platforms without requiring local system access. This vulnerability aligns with ATT&CK technique T1059.007 which describes the use of Java for execution, and T1203 which covers exploitation for privilege escalation through remote code execution.
Mitigation strategies for CVE-2008-5358 primarily focus on immediate patching of affected Java installations to the latest available updates that address the memory corruption issue within splashscreen.dll. Organizations should implement comprehensive patch management processes to ensure all java runtime environments are updated promptly, particularly those running versions 6 Update 10 and earlier. Additional defensive measures include implementing strict file validation policies that prevent execution of suspicious graphics files, disabling java applet execution in web browsers, and employing network-based intrusion detection systems to monitor for exploitation attempts. Security administrators should also consider implementing application whitelisting policies that restrict execution of java applications to only trusted sources, while maintaining detailed logging of java runtime activities to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of keeping runtime environments updated and the potential consequences of legacy software components that may contain unpatched memory corruption vulnerabilities.