CVE-2006-3100 in termpkg
Summary
by MITRE
termpkg 3.3 suffers from buffer overflow.
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Analysis
by VulDB Data Team • 02/05/2024
The vulnerability identified as CVE-2006-3100 affects termpkg version 3.3 and represents a classic buffer overflow condition that can potentially lead to arbitrary code execution. This type of vulnerability occurs when a program writes more data to a fixed-length buffer than it can accommodate, causing adjacent memory locations to be overwritten. The termpkg utility, which is used for package management in certain terminal environments, fails to properly validate input lengths when processing user-supplied data, creating an exploitable condition that adversaries can leverage to gain unauthorized system access.
Buffer overflow vulnerabilities fall under the CWE-121 category of "Stack-based Buffer Overflow" and represent one of the most prevalent and dangerous classes of software defects in system security. The technical flaw manifests when termpkg processes command-line arguments or configuration data without implementing proper bounds checking mechanisms. When an attacker supplies input exceeding the allocated buffer size, the excess data overflows into adjacent memory segments, potentially corrupting critical program variables, return addresses, or executable code. This overflow can be strategically manipulated to redirect program execution flow, allowing attackers to inject and execute malicious code within the target system's memory space.
The operational impact of this vulnerability extends beyond simple data corruption, as it provides attackers with a potential pathway for privilege escalation and persistent system compromise. An attacker who successfully exploits this buffer overflow could execute arbitrary code with the privileges of the termpkg process, which typically runs with elevated permissions during package management operations. This vulnerability is particularly concerning in environments where package management tools are frequently used with untrusted input sources or when automated package installation processes exist. The attack surface is broadened by the fact that termpkg is commonly used in system administration tasks where users might inadvertently provide malicious input through command-line parameters or configuration files.
Mitigation strategies for CVE-2006-3100 should focus on both immediate patching and defensive programming practices. The most effective immediate solution involves upgrading to a patched version of termpkg that implements proper input validation and buffer size checking mechanisms. Organizations should also implement input sanitization procedures that validate all user-supplied data before processing, particularly for command-line arguments and configuration inputs. Defense-in-depth approaches include enabling stack protection mechanisms such as stack canaries, address space layout randomization, and non-executable stack protections. From an ATT&CK framework perspective, this vulnerability maps to techniques involving buffer overflow exploitation and privilege escalation, making it a critical target for security hardening measures and monitoring systems that detect anomalous command execution patterns. System administrators should also consider implementing principle of least privilege controls for package management utilities and monitor for unusual package installation activities that could indicate exploitation attempts.