CVE-2007-1041 in News Rover
Summary
by MITRE
Multiple stack-based buffer overflows in S&H Computer Systems News Rover 12.1 Rev 1 allow remote attackers to execute arbitrary code via a .nzb file with a long (1) group or (2) subject string.
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Analysis
by VulDB Data Team • 08/24/2024
The vulnerability identified as CVE-2007-1041 represents a critical stack-based buffer overflow in the News Rover 12.1 Rev 1 software developed by S&H Computer Systems. This flaw exists within the handling of .nzb file formats which are commonly used for Usenet newsgroup file transfers and organization. The vulnerability specifically manifests when processing group or subject strings that exceed predetermined buffer limits, creating opportunities for malicious code execution. The issue stems from inadequate input validation and bounds checking within the application's parsing routines for news group metadata.
From a technical perspective, this vulnerability operates through stack-based buffer overflow mechanisms that are classified under CWE-121 as heap-based buffer overflow conditions. The flaw occurs when the application attempts to store data exceeding the allocated stack buffer space for group or subject fields within .nzb file structures. Attackers can craft malicious .nzb files containing excessively long group or subject strings that overwrite adjacent stack memory locations. This memory corruption can overwrite return addresses, function pointers, or other critical control data, enabling attackers to redirect program execution flow and execute arbitrary code with the privileges of the affected application process.
The operational impact of this vulnerability is significant as it allows remote code execution without requiring local access or authentication. An attacker can simply distribute a malicious .nzb file through Usenet newsgroups or other distribution channels, and users who open these files with the vulnerable News Rover application will be vulnerable to exploitation. This creates a persistent threat vector since .nzb files are commonly shared among users for organizing and downloading content from Usenet. The vulnerability affects the software's ability to properly validate and sanitize input from external sources, making it particularly dangerous in environments where users regularly download content from untrusted sources.
The exploitation of this vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter execution, as successful exploitation would allow attackers to execute arbitrary commands on the victim's system. The attack surface is expanded by the fact that Usenet newsgroups are often used for legitimate file sharing and distribution, making the malicious .nzb files harder to detect and filter. Security professionals should consider implementing network-based intrusion detection systems to monitor for suspicious .nzb file patterns and establish strict input validation policies for all external data processing. The vulnerability also highlights the importance of regular software updates and patch management, as the affected version of News Rover was likely not receiving security updates from the vendor. Organizations should implement sandboxing techniques when processing .nzb files and consider alternative news reader software that has been updated with proper input validation and memory safety mechanisms to mitigate the risk of exploitation.