CVE-2004-0013 in Server
Summary
by MITRE
jabber 1.4.2, 1.4.2a, and possibly earlier versions, does not properly handle SSL connections, which allows remote attackers to cause a denial of service (crash).
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Analysis
by VulDB Data Team • 04/22/2019
The vulnerability identified as CVE-2004-0013 affects jabber server versions 1.4.2, 1.4.2a, and potentially earlier releases, representing a critical security flaw in the handling of secure socket layer connections. This issue stems from improper SSL connection management within the jabber implementation, creating a pathway for malicious actors to exploit the system through carefully crafted network traffic. The vulnerability specifically targets the cryptographic handshake process and certificate validation mechanisms that are fundamental to establishing secure communications in instant messaging systems.
The technical flaw manifests when the jabber server encounters malformed or unexpected SSL handshake sequences during connection establishment. When remote attackers send specially crafted SSL packets or manipulate the SSL negotiation process, the server fails to properly validate incoming connection requests and subsequently crashes or becomes unresponsive. This behavior represents a classic buffer overflow or improper input validation vulnerability that falls under the broader category of memory corruption issues. The vulnerability is particularly dangerous because it can be exploited without requiring authentication, making it accessible to anyone who can establish network connectivity to the affected server. According to CWE classification, this vulnerability maps to CWE-122 which deals with heap-based buffer overflow conditions, and potentially CWE-20 which covers input validation errors.
The operational impact of CVE-2004-0013 extends beyond simple service disruption to potentially compromise the entire messaging infrastructure. When exploited successfully, the denial of service attack can render the jabber server completely unavailable to legitimate users, effectively cutting off communication services for all connected clients. This type of attack directly violates the availability principle of the CIA triad and can be particularly devastating in enterprise environments where instant messaging serves as a critical communication channel. The vulnerability can be leveraged as a stepping stone for more sophisticated attacks, as it provides an entry point that can be combined with other exploits to gain deeper system access. From an ATT&CK framework perspective, this vulnerability aligns with techniques involving denial of service attacks and can be categorized under T1499 which covers network denial of service attacks.
Mitigation strategies for CVE-2004-0013 should prioritize immediate patching of affected jabber server installations to address the SSL handling flaws. System administrators should implement network monitoring to detect unusual SSL handshake patterns that might indicate exploitation attempts. The implementation of proper input validation and robust error handling mechanisms within the SSL processing code is essential for preventing similar vulnerabilities in future deployments. Organizations should also consider implementing network segmentation to limit the impact of potential exploitation and establish incident response procedures specifically addressing denial of service vulnerabilities. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar issues in other components of the messaging infrastructure. The vulnerability highlights the importance of thorough testing of cryptographic implementations and proper handling of network protocol negotiations in security-critical applications.