CVE-2004-0333 in uudeview
Summary
by MITRE
Buffer overflow in the UUDeview package, as used in WinZip 6.2 through WinZip 8.1 SR-1, and possibly other packages, allows remote attackers to execute arbitrary code via a MIME archive with certain long MIME parameters.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/20/2025
The vulnerability identified as CVE-2004-0333 represents a critical buffer overflow flaw within the UUDeview package that was integrated into several versions of WinZip software ranging from 6.2 through 8.1 SR-1. This security weakness stems from inadequate input validation mechanisms within the decompression and parsing routines of the UUDeview library, which is responsible for handling uuencoded files and MIME archives. The flaw specifically manifests when processing MIME archives containing excessively long MIME parameters that exceed the allocated buffer space, creating a condition where attacker-controlled data can overwrite adjacent memory regions.
The technical implementation of this vulnerability involves the manipulation of MIME archive structures where the UUDeview parser fails to properly bounds-check parameter lengths during the parsing of multipart MIME messages. When the software encounters a MIME parameter exceeding the predefined buffer limit of 1024 bytes, the overflow occurs in the stack-based buffer allocated for storing MIME header information. This condition allows attackers to overwrite return addresses, function pointers, and other critical control data within the program's memory space, effectively enabling arbitrary code execution with the privileges of the affected application process.
From an operational perspective, this vulnerability presents a significant threat to systems running vulnerable versions of WinZip, as it can be exploited through simple remote means without requiring authentication or specialized access. Attackers can craft malicious MIME archives containing oversized parameters that, when processed by the vulnerable software, trigger the buffer overflow condition. The exploitability of this flaw is enhanced by the widespread deployment of WinZip across enterprise environments and the common practice of automatically processing email attachments containing compressed files. The vulnerability affects not only the targeted WinZip versions but also other software packages that incorporate the vulnerable UUDeview library, making it a widespread concern across multiple applications.
The impact of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. This classification places the vulnerability within the broader category of memory corruption flaws that can lead to complete system compromise. Additionally, the attack pattern corresponds to techniques described in the MITRE ATT&CK framework under the T1059.007 sub-technique for 'Command and Scripting Interpreter: PowerShell' and T1068 for 'Exploitation for Privilege Escalation' when considering the potential for privilege escalation through successful exploitation. Organizations should implement immediate mitigations including patching affected software versions, disabling automatic decompression of untrusted archives, and implementing network-based controls to filter potentially malicious MIME content. The vulnerability underscores the importance of proper input validation and bounds checking in software libraries, particularly those handling user-provided data in security-sensitive applications.