CVE-2007-3841 in Pidgin
Summary
by MITRE
Unspecified vulnerability in Pidgin (formerly Gaim) 2.0.2 for Linux allows remote authenticated users, who are listed in a users list, to execute certain commands via unspecified vectors, aka ZD-00000035. NOTE: this information is based upon a vague advisory by a vulnerability information sales organization that does not coordinate with vendors or release actionable advisories. A CVE has been assigned for tracking purposes, but duplicates with other CVEs are difficult to determine.
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Analysis
by VulDB Data Team • 09/05/2018
The vulnerability identified as CVE-2007-3841 affects Pidgin version 2.0.2, a popular instant messaging client that was formerly known as Gaim. This security flaw represents a significant concern for users who rely on the application for communication, particularly given that it allows authenticated remote attackers to execute commands. The vulnerability specifically targets users who are already listed in the victim's contact list, creating a scenario where trusted contacts could potentially exploit the system. The nature of this vulnerability is classified as unspecified, indicating that the exact technical mechanism remains unclear, which complicates both the assessment and remediation processes. This lack of detailed information is particularly concerning as it suggests either a limited disclosure or a vulnerability that was not thoroughly analyzed by the reporting organization.
The technical implications of this vulnerability align with common command execution flaws that typically arise from improper input validation or insufficient access controls within client applications. When users are listed in a contact directory, the application may process data from these users without adequate sanitization, potentially allowing malicious input to be interpreted as executable commands. This type of vulnerability would fall under the CWE classification for command injection or code execution flaws, where untrusted data flows into system commands without proper validation or escaping mechanisms. The authenticated nature of the attack means that attackers must first establish a relationship with the target user, typically through legitimate contact addition, which makes this vulnerability particularly insidious as it exploits trust relationships within the application's user base.
The operational impact of CVE-2007-3841 extends beyond simple data compromise, as command execution capabilities can lead to complete system compromise. An attacker with access to a user's contact list could potentially gain unauthorized control over the victim's system, leading to data theft, system modification, or further network penetration. This vulnerability could be exploited as part of a broader attack chain, where initial compromise through social engineering or contact list manipulation leads to more significant security breaches. The fact that this vulnerability affects a widely used instant messaging client means that the potential attack surface is extensive, with numerous users potentially at risk depending on how their contact lists are managed and maintained. The attack vector through contact list entries suggests that the vulnerability might be triggered when the application processes messages or data from trusted contacts, making detection and prevention particularly challenging.
Mitigation strategies for this vulnerability should focus on immediate application updates and enhanced access controls within the Pidgin client. Users should upgrade to patched versions of the software as soon as possible, as the vulnerability was likely addressed in subsequent releases. Network administrators should implement monitoring for unusual command execution patterns and consider restricting the types of data that can be processed from contact list entries. The security community should also consider this vulnerability in the context of the broader ATT&CK framework, where it might map to techniques involving privilege escalation or command and control communications. Organizations using Pidgin should review their user access policies and implement additional verification mechanisms for contact list management. Given the unspecified nature of the vulnerability, security teams should also consider implementing behavioral monitoring to detect anomalous command execution patterns that might indicate exploitation attempts. The vulnerability highlights the importance of maintaining current software versions and implementing defense-in-depth strategies for instant messaging applications that handle sensitive communications and user data.