CVE-2015-4840 in Java SE
Summary
by MITRE
Unspecified vulnerability in Oracle Java SE 7u85 and 8u60, and Java SE Embedded 8u51, allows remote attackers to affect confidentiality via unknown vectors related to 2D.
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Analysis
by VulDB Data Team • 06/23/2022
The vulnerability identified as CVE-2015-4840 represents a significant security weakness within Oracle Java SE and Java SE Embedded platforms, specifically affecting versions 7u85 and 8u60 along with Java SE Embedded 8u51. This issue falls under the broader category of security flaws that can compromise the confidentiality of data processed through Java applications. The vulnerability is classified as unspecified, indicating that the exact technical details of the flaw were not fully disclosed in the initial vulnerability report, though it is clearly related to the 2D graphics rendering components of the Java platform.
The technical nature of this vulnerability stems from weaknesses in how Java handles 2D graphics operations, particularly within the Java 2D API which is responsible for rendering graphical content in Java applications. Attackers can exploit this flaw remotely to potentially access sensitive information without proper authorization. The unspecified vectors suggest that the vulnerability may involve memory corruption issues, buffer overflows, or other low-level memory management problems that occur during 2D graphics processing. This type of vulnerability typically arises from insufficient input validation or improper handling of graphical data structures that could be manipulated by malicious actors.
From an operational perspective, this vulnerability poses serious risks to organizations that rely heavily on Java-based applications for their business operations. Remote exploitation capabilities mean that attackers could potentially compromise systems from outside the network perimeter, making this particularly dangerous for enterprise environments. The confidentiality impact suggests that sensitive data could be accessed or exfiltrated through the compromised 2D graphics rendering functionality, which could include application data, user information, or proprietary business intelligence. Organizations running Java applications with 2D graphics capabilities are particularly at risk, especially those in financial services, healthcare, or government sectors where data confidentiality is paramount.
The vulnerability aligns with several common attack patterns documented in the MITRE ATT&CK framework, particularly those related to privilege escalation and information gathering through application-level exploits. It also corresponds to CWE-119, which covers weaknesses in memory management, and CWE-20, which addresses input validation issues. Organizations should implement immediate mitigations including applying the latest Oracle Java updates, disabling unnecessary 2D graphics functionality where possible, and implementing network segmentation to limit the potential attack surface. Additionally, monitoring for unusual network traffic patterns and conducting regular security assessments of Java applications can help detect potential exploitation attempts. The vulnerability demonstrates the critical importance of keeping Java runtime environments updated, as many such flaws are patched through routine security updates that address specific memory management and input validation issues in the underlying Java libraries.