CVE-2011-2585 in Show
Summary
by MITRE
Cisco Show and Share 5(2), 5.2(1), and 5.2(2) before 5.2(2.1) allows remote authenticated users to upload and execute arbitrary code by leveraging video upload privileges, aka Bug ID CSCto69857.
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Analysis
by VulDB Data Team • 11/24/2021
Cisco Show and Share versions 5.2(1) and 5.2(2) contain a critical security vulnerability that enables authenticated remote attackers to execute arbitrary code through video upload functionality. This vulnerability stems from insufficient input validation and access control mechanisms within the video upload processing pipeline. The flaw specifically affects Cisco Show and Share versions 5.2(1) and 5.2(2) prior to the 5.2(2.1) release, creating a persistent security risk for organizations utilizing these software versions.
The technical implementation of this vulnerability involves a privilege escalation scenario where authenticated users with video upload permissions can manipulate the file upload process to execute malicious code on the target system. The vulnerability is classified as a file upload vulnerability that allows attackers to bypass normal file validation checks and upload malicious files with executable code. This represents a classic case of insecure file handling and inadequate sanitization of user-supplied input, which aligns with CWE-434, which catalogs insecure file upload vulnerabilities. The vulnerability demonstrates a failure in proper access control enforcement where the system does not adequately verify the nature and content of uploaded files before processing them.
The operational impact of this vulnerability is severe and potentially devastating for affected organizations. Remote authenticated attackers can leverage this weakness to gain unauthorized code execution capabilities on the target system, potentially leading to full system compromise, data exfiltration, or lateral movement within the network. The vulnerability affects the core functionality of video sharing platforms, making it particularly dangerous for organizations that rely on these systems for business-critical operations. Attackers can upload malicious video files that contain payloads designed to exploit the system, potentially creating backdoors or establishing persistent access to the affected infrastructure.
Organizations should immediately implement the security patch released by Cisco for the 5.2(2.1) version to remediate this vulnerability. The patch addresses the underlying file upload validation issues and enhances access control mechanisms to prevent unauthorized code execution. Additionally, organizations should consider implementing network segmentation to limit the potential impact of successful exploitation and deploy intrusion detection systems to monitor for suspicious file upload activities. The vulnerability also highlights the importance of proper input validation and secure coding practices, aligning with ATT&CK technique T1059.007 for command and scripting interpreter, as attackers can execute arbitrary code through the compromised upload functionality. Organizations should also conduct regular security assessments and penetration testing to identify similar vulnerabilities in their software ecosystems, particularly focusing on file handling and upload mechanisms that could be exploited for privilege escalation and code execution attacks.