CVE-2004-2304 in Trillian
Summary
by MITRE
Integer overflow in Trillian 0.74 and earlier, and Trillian Pro 2.01 and earlier, allows remote attackers to cause a denial of service and possibly execute arbitrary code via a directIM packet that triggers a heap-based buffer overflow.
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Analysis
by VulDB Data Team • 06/19/2019
The vulnerability described in CVE-2004-2304 represents a critical security flaw affecting Trillian instant messaging clients version 0.74 and earlier, as well as Trillian Pro 2.01 and earlier. This issue stems from an integer overflow condition that occurs when processing directIM packets, creating a scenario where malicious actors can exploit the software's handling of numeric values to manipulate memory operations. The vulnerability falls under the category of memory corruption flaws, specifically manifesting as a heap-based buffer overflow that can lead to unpredictable system behavior and potential code execution.
The technical implementation of this vulnerability involves the manipulation of integer values within the Trillian client's packet processing logic. When a specially crafted directIM packet is received, the application fails to properly validate or handle the integer values contained within the packet structure, leading to an overflow condition. This overflow corrupts heap memory structures, potentially allowing attackers to overwrite critical memory locations or inject malicious code into the application's execution context. The flaw demonstrates characteristics consistent with CWE-190, which describes integer overflow conditions that can lead to buffer overflows, and aligns with ATT&CK technique T1203 for exploitation of memory corruption vulnerabilities.
The operational impact of this vulnerability extends beyond simple denial of service to encompass potential remote code execution capabilities, making it particularly dangerous in networked environments where instant messaging clients are frequently used. Attackers can leverage this vulnerability to compromise systems running affected Trillian versions, potentially gaining unauthorized access to user data, system resources, or even complete system control. The heap-based nature of the buffer overflow provides attackers with additional attack surface opportunities, as heap corruption can be particularly challenging to detect and prevent through traditional security measures.
Mitigation strategies for CVE-2004-2304 should focus on immediate software updates and patches provided by the vendor, as well as network-level controls to prevent unauthorized packet delivery to affected systems. Organizations should implement network segmentation to limit exposure, deploy intrusion detection systems to monitor for suspicious directIM packet patterns, and consider disabling directIM functionality until proper patches are applied. The vulnerability also highlights the importance of input validation and proper integer handling in software development practices, emphasizing the need for defensive programming techniques such as bounds checking and overflow detection mechanisms. Additionally, system administrators should conduct thorough vulnerability assessments to identify all instances of affected Trillian versions and ensure comprehensive patch management across all networked systems.