CVE-2000-0846 in Darxite
Summary
by MITRE
Buffer overflow in Darxite 0.4 and earlier allows a remote attacker to execute arbitrary commands via a long username or password.
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Analysis
by VulDB Data Team • 10/12/2025
The vulnerability identified as CVE-2000-0846 represents a critical buffer overflow flaw affecting Darxite version 0.4 and earlier implementations. This security weakness resides within the authentication handling mechanism of the software, specifically when processing user credentials including usernames and passwords. The flaw manifests when the application receives input data that exceeds the allocated buffer space, creating a condition where adjacent memory locations become overwritten with attacker-controlled data. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, where the overflow occurs in a stack-allocated buffer during program execution.
The technical exploitation of this vulnerability enables remote attackers to execute arbitrary commands on the affected system by carefully crafting input parameters that trigger the buffer overflow condition. When a user submits a username or password exceeding the designated buffer limits, the excess data overflows into adjacent memory regions, potentially corrupting the program's execution flow. Attackers can manipulate this overflow to redirect program execution to malicious code placed within the overflowed buffer or to overwrite return addresses on the stack, effectively gaining control over the application's execution context. The vulnerability demonstrates characteristics consistent with the ATT&CK technique T1203, which involves exploiting software vulnerabilities to gain code execution privileges.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it provides attackers with complete control over the affected system running Darxite. Remote command execution capabilities enable adversaries to perform various malicious activities including data exfiltration, system reconnaissance, privilege escalation to administrative levels, and establishment of persistent backdoors. The vulnerability affects authentication mechanisms that are fundamental to system security, making it particularly dangerous as it can be exploited without requiring prior access credentials. Systems utilizing affected versions of Darxite become vulnerable to automated exploitation attempts, as the attack vector requires no special privileges beyond network connectivity to the target service.
Mitigation strategies for CVE-2000-0846 primarily focus on immediate software updates and patches provided by the vendor to address the buffer overflow condition. Organizations should implement network segmentation to limit access to affected systems and deploy intrusion detection systems to monitor for exploitation attempts. Input validation measures should be strengthened to prevent oversized credentials from being processed, while application-level protections such as stack canaries and address space layout randomization can provide additional defense-in-depth. The vulnerability underscores the importance of secure coding practices and regular security assessments to identify and remediate buffer overflow conditions before they can be exploited by malicious actors. Security teams should prioritize patch management processes to ensure timely deployment of vendor-provided fixes and maintain comprehensive monitoring of affected systems to detect potential exploitation attempts.