CVE-2023-34301 in Cobalt
Summary
by MITRE • 05/03/2024
Ashlar-Vellum Cobalt CO File Parsing Untrusted Pointer Dereference Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of CO files. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-17909.
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Analysis
by VulDB Data Team • 09/19/2024
The CVE-2023-34301 vulnerability represents a critical remote code execution flaw in Ashlar-Vellum Cobalt software that stems from an untrusted pointer dereference during CO file parsing operations. This vulnerability resides within the application's file handling mechanism where the software fails to properly validate user-supplied data before attempting to dereference it as a memory pointer. The flaw manifests specifically when processing CO files, which are proprietary binary formats used by the Cobalt application for document storage and manipulation. The vulnerability's classification as a pointer dereference issue indicates that malicious input can manipulate memory access patterns, potentially leading to arbitrary code execution.
The technical exploitation of this vulnerability requires user interaction through either visiting a malicious webpage or opening a specially crafted malicious CO file. This requirement places the vulnerability in the category of client-side attacks where social engineering plays a crucial role in successful exploitation. The lack of proper input validation creates a direct pathway for attackers to manipulate the application's memory access behavior, allowing them to execute arbitrary code within the context of the current process. This type of vulnerability typically falls under CWE-476 which describes NULL Pointer Dereference, though the specific implementation in this case involves untrusted pointer dereference rather than simple null dereference.
From an operational impact perspective, this vulnerability poses significant risk to organizations using Ashlar-Vellum Cobalt software, as it enables remote attackers to gain unauthorized code execution capabilities. The vulnerability's exploitation can lead to complete system compromise, data exfiltration, and persistent access within the target environment. Attackers can leverage this flaw to establish backdoors, deploy additional malware, or escalate privileges to gain administrative control over affected systems. The remote nature of the attack means that exploitation can occur without physical access to the target systems, making it particularly dangerous for enterprise environments where such applications may be widely deployed.
The mitigation strategies for CVE-2023-34301 should focus on both immediate patching and operational security measures. Organizations must prioritize applying vendor-provided security updates as soon as they become available to address the underlying pointer dereference issue. Additionally, implementing network-level controls such as web application firewalls and content filtering systems can help prevent exploitation attempts. Security teams should also consider deploying sandboxing mechanisms for CO file processing and implementing strict access controls to limit the potential impact of successful exploitation. The vulnerability's characteristics align with ATT&CK technique T1203 - Exploitation for Client Execution, highlighting the need for comprehensive endpoint protection measures including behavioral monitoring and anomaly detection systems to identify potential exploitation attempts.