CVE-2024-40595 in Safeguard for Privileged Sessions On Premise
Summary
by MITRE • 10/24/2024
An authentication-bypass issue in the RDP component of One Identity Safeguard for Privileged Sessions (SPS) On Premise before 7.5.1 (and LTS before 7.0.5.1) allows man-in-the-middle attackers to obtain access to privileged sessions on target resources by intercepting cleartext RDP protocol information.
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Analysis
by VulDB Data Team • 10/25/2024
The vulnerability identified as CVE-2024-40595 represents a critical authentication bypass flaw within the Remote Desktop Protocol (RDP) component of One Identity Safeguard for Privileged Sessions On Premise. This issue affects versions prior to 7.5.1 for standard releases and 7.0.5.1 for long-term support releases, creating a significant security gap that adversaries can exploit to gain unauthorized access to privileged sessions. The vulnerability stems from insufficient protection mechanisms during RDP communication, specifically failing to adequately secure the cleartext transmission of RDP protocol information.
The technical flaw manifests through the interception and manipulation of cleartext RDP protocol information during network transmission. This weakness allows attackers positioned in a man-in-the-middle position to capture and potentially alter RDP session data, effectively bypassing the normal authentication mechanisms that should protect privileged access to critical systems. The vulnerability directly impacts the integrity and confidentiality of RDP communications, as the cleartext transmission exposes sensitive authentication credentials and session information to potential interception. This issue aligns with CWE-312 (Cleartext Storage of Sensitive Information) and CWE-319 (Cleartext Transmission of Sensitive Information) classifications, highlighting the fundamental flaw in how sensitive RDP protocol data is handled during transmission.
The operational impact of this vulnerability extends beyond simple credential theft, as it enables attackers to establish unauthorized privileged sessions with target resources. This capability allows adversaries to perform malicious activities within the privileged session context, potentially leading to complete system compromise, data exfiltration, and lateral movement within the network. The vulnerability particularly affects organizations that rely heavily on privileged session management and remote access capabilities, as it undermines the fundamental security controls designed to protect sensitive systems. According to ATT&CK framework, this vulnerability maps to T1078 (Valid Accounts) and T1566 (Phishing) as attackers can leverage stolen credentials to maintain persistent access and potentially escalate privileges within the target environment.
Organizations should immediately implement the vendor-provided security patches and updates to address this vulnerability, with particular attention to upgrading to versions 7.5.1 or later for standard releases and 7.0.5.1 or later for LTS releases. Network segmentation and monitoring of RDP traffic should be enhanced to detect potential interception attempts, while implementing additional authentication layers such as multi-factor authentication can provide defense-in-depth against exploitation attempts. Security teams should conduct comprehensive vulnerability assessments to identify all instances of affected SPS deployments and ensure proper network access controls are in place to prevent unauthorized network access that could enable man-in-the-middle attacks. The vulnerability underscores the critical importance of maintaining up-to-date security controls and implementing proper network security measures to protect against protocol-level attacks that exploit cleartext transmission vulnerabilities.