CVE-2004-1232 in Instant Messenger
Summary
by MITRE
Stack-based buffer overflow in the code that sends images in Gadu-Gadu allows remote attackers to execute arbitrary code via a large image filename.
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Analysis
by VulDB Data Team • 07/21/2017
The vulnerability identified as CVE-2004-1232 represents a critical stack-based buffer overflow flaw within the Gadu-Gadu instant messaging client software. This security defect specifically affects the component responsible for handling image transmission functionality within the messaging protocol. The vulnerability arises from inadequate input validation when processing image filenames, creating an exploitable condition that can be leveraged by remote attackers to gain unauthorized system control.
The technical implementation of this vulnerability stems from improper bounds checking within the image filename handling code segment. When the Gadu-Gadu client receives an image file, it processes the filename without sufficient validation of its length or content, allowing an attacker to craft a maliciously formatted filename that exceeds the allocated stack buffer space. This buffer overflow condition occurs because the software does not properly enforce size limitations on incoming image filenames, enabling attackers to overwrite adjacent memory locations including return addresses and control data structures.
From an operational perspective, this vulnerability presents a severe threat to systems running affected versions of the Gadu-Gadu client software. Remote attackers can exploit this weakness by sending specially crafted image files with excessively long filenames to victims, potentially leading to complete system compromise. The attack vector requires no authentication and can be executed over network connections, making it particularly dangerous in enterprise environments where instant messaging systems are widely deployed. Successful exploitation typically results in arbitrary code execution with the privileges of the affected user account, potentially enabling further lateral movement within network infrastructures.
The vulnerability aligns with CWE-121, which specifically addresses stack-based buffer overflow conditions, and demonstrates characteristics consistent with ATT&CK technique T1059.007 for command and scripting interpreter execution. Organizations should immediately implement mitigations including patching to the latest software versions, network segmentation to limit exposure, and monitoring for suspicious image file transfers. Additionally, input validation controls should be strengthened to enforce strict filename length limitations and character set restrictions, while implementing proper stack protection mechanisms such as stack canaries or address space layout randomization to reduce exploit reliability. System administrators should also consider implementing intrusion detection systems to monitor for anomalous image transfer patterns that might indicate exploitation attempts.