CVE-2010-1317 in Helix Dna Server
Summary
by MITRE
Heap-based buffer overflow in the NTLM authentication functionality in RealNetworks Helix Server and Helix Mobile Server 11.x, 12.x, and 13.x allows remote attackers to have an unspecified impact via invalid base64-encoded data.
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Analysis
by VulDB Data Team • 09/08/2021
The vulnerability identified as CVE-2010-1317 represents a critical heap-based buffer overflow within the NTLM authentication implementation of RealNetworks Helix Server and Helix Mobile Server versions 11.x, 12.x, and 13.x. This flaw exists in the handling of authentication requests where the system processes base64-encoded data without proper bounds checking, creating an exploitable condition that can be leveraged by remote attackers. The vulnerability specifically targets the authentication subsystem, which serves as a primary entry point for network access control in the affected server implementations.
The technical mechanism behind this vulnerability involves improper input validation within the NTLM authentication processing module. When the server receives authentication requests containing base64-encoded data, it fails to adequately validate the length and content of this data before attempting to process it within heap-allocated memory structures. This lack of proper bounds checking allows an attacker to supply maliciously crafted base64 data that exceeds the allocated buffer size, resulting in memory corruption that can be exploited to execute arbitrary code or cause denial of service conditions. The heap-based nature of the overflow indicates that the vulnerable code operates within dynamically allocated memory regions, making exploitation more complex but potentially more impactful than stack-based alternatives.
From an operational perspective, this vulnerability presents significant risk to organizations relying on RealNetworks Helix Server implementations for media streaming and content delivery services. Remote attackers can exploit this weakness without requiring authentication credentials, making it particularly dangerous as it allows unauthorized individuals to potentially gain control over the affected servers. The unspecified impact mentioned in the CVE description suggests that exploitation could result in various outcomes including remote code execution, system crashes, or privilege escalation depending on the specific attack vector and target environment. The vulnerability affects multiple versions of the Helix Server platform, indicating it was likely present across a broad deployment base that organizations may have been unaware of.
Organizations should immediately implement mitigations including applying the vendor-provided patches and updates released to address this vulnerability. Network segmentation and access controls should be strengthened to limit exposure of affected servers to untrusted networks. Monitoring for suspicious authentication attempts and base64-encoded data patterns in server logs can help detect potential exploitation attempts. The vulnerability aligns with CWE-121, heap-based buffer overflow, and represents a significant risk under ATT&CK framework category T1190 for exploit public-facing application. Security teams should also consider implementing intrusion detection systems that can identify patterns associated with this specific exploit type and maintain updated threat intelligence feeds for similar vulnerabilities in media server software implementations.