CVE-2021-27195 in Vision Pro
Summary
by MITRE • 03/25/2021
Improper Authorization vulnerability in Netop Vision Pro up to and including to 9.7.1 allows an attacker to replay network traffic.
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Analysis
by VulDB Data Team • 04/05/2021
The CVE-2021-27195 vulnerability represents a critical improper authorization flaw within Netop Vision Pro software versions 9.7.1 and earlier. This vulnerability stems from insufficient validation of network traffic authenticity, creating a pathway for malicious actors to exploit the system through traffic replay attacks. The affected software operates within enterprise environments where remote desktop and network management capabilities are essential for IT operations and system administration. The vulnerability specifically targets the authentication mechanisms that govern network communication between client and server components, allowing unauthorized access to network resources through the manipulation of previously captured network packets.
The technical implementation of this flaw resides in the software's failure to properly validate session tokens and authentication credentials during network traffic processing. When network packets are transmitted between the Netop Vision Pro client and server components, the system does not adequately verify the integrity and freshness of these communications. This weakness enables attackers to capture legitimate network traffic and replay it at a later time to gain unauthorized access or perform actions that should be restricted to authorized users. The vulnerability operates at the transport layer of network communication, specifically affecting the authentication and authorization protocols that govern user access to network resources.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can enable attackers to escalate privileges and gain deeper system control within the network environment. An attacker who successfully exploits this vulnerability can potentially manipulate network traffic to execute commands, access sensitive data, or disrupt normal operations of the managed systems. The replay capability means that even if the original authentication tokens expire, attackers can still leverage previously captured traffic to maintain access. This vulnerability particularly affects organizations that rely heavily on remote desktop management solutions and network monitoring tools, where the integrity of network communications is paramount for maintaining security posture.
Mitigation strategies for CVE-2021-27195 should prioritize immediate software updates to versions that address the improper authorization flaw. Organizations must implement network monitoring solutions to detect anomalous traffic patterns that may indicate replay attacks, while also strengthening their overall network security posture through the implementation of robust authentication mechanisms. The vulnerability aligns with CWE-285, which addresses improper authorization issues, and can be mapped to ATT&CK technique T1078.002 for valid accounts and T1566.001 for spearphishing via email. Network segmentation and the implementation of additional authentication layers such as multi-factor authentication can provide additional defense in depth. Regular security assessments and network traffic analysis should be conducted to identify and prevent similar vulnerabilities in other network management systems. Organizations should also establish incident response procedures specifically designed to address traffic replay attacks and ensure proper patch management protocols are in place to prevent exploitation of known vulnerabilities.