CVE-2009-1636 in GroupWise
Summary
by MITRE
Multiple buffer overflows in the Internet Agent (aka GWIA) component in Novell GroupWise 7.x before 7.03 HP3 and 8.x before 8.0 HP2 allow remote attackers to execute arbitrary code via (1) a crafted e-mail address in an SMTP session or (2) an SMTP command.
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Analysis
by VulDB Data Team • 09/05/2019
The vulnerability identified as CVE-2009-1636 represents a critical security flaw within Novell GroupWise 7.x and 8.x email systems, specifically affecting the Internet Agent component also known as GWIA. This vulnerability manifests as multiple buffer overflow conditions that can be exploited by remote attackers to gain arbitrary code execution capabilities. The flaw exists in the processing of email data within the GroupWise messaging infrastructure, making it particularly dangerous as it can be triggered through standard email communication protocols without requiring authentication or privileged access.
The technical implementation of this vulnerability occurs through two distinct attack vectors that exploit buffer overflow conditions in the Internet Agent component. The first vector involves sending a specially crafted email address during an SMTP session that causes memory corruption when the system attempts to process the malformed data. The second vector targets SMTP commands themselves, where maliciously formatted commands can trigger the same buffer overflow behavior. Both attack paths leverage the fundamental weakness in input validation and memory management within the GroupWise email processing engine, allowing attackers to overwrite adjacent memory locations with malicious code or manipulate program execution flow.
From an operational impact perspective, this vulnerability presents a severe threat to organizations relying on Novell GroupWise email infrastructure as it enables remote code execution without authentication requirements. Attackers can leverage this flaw to install malware, establish backdoors, or gain full control over affected servers. The vulnerability affects both GroupWise 7.x versions prior to 7.03 HP3 and 8.x versions prior to 8.0 HP2, representing a substantial portion of the deployed user base at the time of discovery. Organizations with exposed GroupWise servers become immediately vulnerable to exploitation, potentially leading to data breaches, system compromise, and unauthorized access to sensitive email communications.
The exploitation of this vulnerability aligns with ATT&CK framework techniques related to remote code execution and privilege escalation, specifically mapping to tactics such as execution and persistence. This vulnerability also corresponds to CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios. The attack vectors described in the vulnerability can be classified under the broader category of network-based attacks that leverage protocol implementation flaws to achieve unauthorized system access. Organizations should consider implementing network segmentation, email filtering solutions, and immediate patch management as primary defensive measures against this threat, while also monitoring for potential exploitation attempts in their network traffic logs and system monitoring solutions.
The remediation approach for this vulnerability requires immediate application of official patches provided by Novell, specifically targeting the GroupWise 7.03 HP3 and 8.0 HP2 releases that contain the necessary fixes. Organizations should conduct comprehensive vulnerability assessments to identify all affected GroupWise installations and prioritize patch deployment across their infrastructure. Additionally, network administrators should implement monitoring solutions to detect and block suspicious SMTP traffic patterns that might indicate exploitation attempts, while maintaining regular security updates to prevent similar vulnerabilities from emerging in other components of the GroupWise ecosystem.