CVE-2005-1850 in ekg
Summary
by MITRE
Certain contributed scripts for ekg Gadu Gadu client 1.5 and earlier create temporary files insecurely, with unknown impact and attack vectors, a different vulnerability than CVE-2005-1916.
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Analysis
by VulDB Data Team • 06/07/2019
The vulnerability identified as CVE-2005-1850 affects the ekg Gadu Gadu client version 1.5 and earlier, specifically targeting contributed scripts that handle temporary file creation processes. This issue represents a classic insecure temporary file handling vulnerability that falls under the broader category of temporary file security flaws commonly encountered in instant messaging and communication client software. The vulnerability stems from the improper creation of temporary files by third-party scripts that are integrated into the ekg client ecosystem, creating potential attack surfaces that could be exploited by malicious actors.
The technical flaw manifests in the insecure creation of temporary files during script execution processes within the Gadu Gadu client environment. When scripts generate temporary files without proper security measures, they may create files with predictable names, inadequate permissions, or in world-writable directories. This insecure temporary file creation pattern allows potential attackers to perform race condition attacks, file replacement attacks, or other exploitation techniques that could lead to arbitrary code execution or privilege escalation. The vulnerability is particularly concerning because it affects contributed scripts rather than core client functionality, making it harder to detect and address systematically.
The operational impact of this vulnerability extends beyond simple privilege escalation scenarios to encompass potential data compromise and system control breaches within environments where the ekg client operates. Attackers could exploit this weakness to inject malicious code into temporary files, potentially gaining elevated privileges or executing unauthorized commands on affected systems. The unknown impact and attack vectors mentioned in the original description suggest that the vulnerability could enable various exploitation techniques depending on the specific environment and system configuration. This uncertainty makes the vulnerability particularly dangerous as defenders cannot easily predict or prepare for all possible attack scenarios.
From a cybersecurity perspective, this vulnerability aligns with CWE-377, which addresses insecure temporary file creation, and could potentially map to various ATT&CK techniques including privilege escalation through file system manipulation and execution of malicious code through compromised scripts. The vulnerability demonstrates how third-party integrations in communication clients can introduce security risks that are difficult to monitor or control, especially in environments where users may install unverified contributed scripts. Organizations using the ekg Gadu Gadu client should implement strict script validation and execution controls, along with regular security assessments of contributed components to mitigate potential exploitation risks.
The security implications of this vulnerability underscore the importance of proper temporary file handling practices in client-side applications and highlight the need for comprehensive security testing of third-party components. Mitigation strategies should include implementing secure temporary file creation mechanisms that utilize random file names, proper file permissions, and restricted directory access. Additionally, users should be educated about the risks of installing unverified contributed scripts and organizations should establish policies for script verification and security review processes to prevent exploitation of similar vulnerabilities in other software components.