CVE-2024-26577 in VSeeFace
Summary
by MITRE • 03/27/2024
VSeeFace through 1.13.38.c2 allows attackers to cause a denial of service (application hang) via a spoofed UDP packet containing at least 10 digits in JSON data.
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Analysis
by VulDB Data Team • 08/06/2024
The vulnerability identified as CVE-2024-26577 affects VSeeFace software version 1.13.38.c2 and earlier, presenting a denial of service condition that can cause application hang through specifically crafted UDP packet manipulation. This issue stems from inadequate input validation within the application's network processing routines, where the software fails to properly sanitize or limit the size and content of incoming JSON data within UDP packets. The vulnerability specifically requires that the spoofed UDP packet contain at least ten digits within its JSON payload to trigger the denial of service condition, indicating a targeted parsing flaw that exploits the application's handling of structured data.
The technical flaw manifests when the VSeeFace application receives a UDP packet with malformed JSON data containing excessive numeric sequences, causing the software to enter an infinite loop or resource exhaustion state during parsing operations. This type of vulnerability falls under the category of malformed input processing, which is commonly associated with CWE-20 Improper Input Validation and CWE-400 Uncontrolled Resource Consumption. The application's failure to implement proper bounds checking or input sanitization routines creates an exploitable condition where an attacker can send crafted packets that consume excessive computational resources or cause the application to become unresponsive.
The operational impact of this vulnerability extends beyond simple service disruption, as it can effectively render the VSeeFace application unusable for legitimate users while the software remains in a hung state. This denial of service condition can be particularly problematic in environments where VSeeFace is used for critical communication or video conferencing purposes, potentially leading to business disruption or security operations compromise. Attackers can exploit this vulnerability without requiring authentication or elevated privileges, making it an attractive target for malicious actors seeking to disrupt services. The specific requirement for at least ten digits in the JSON data suggests that the vulnerability may be triggered by certain numeric patterns or sequences that cause the application to process data in an unintended manner, possibly related to timestamp handling or sequence number validation.
Mitigation strategies for CVE-2024-26577 should prioritize immediate software updates from the vendor to address the input validation deficiencies in the UDP packet processing code. Organizations should implement network-level filtering to restrict incoming UDP traffic from unauthorized sources or to limit packet sizes and content patterns that could trigger the vulnerability. Network administrators should consider implementing intrusion detection systems that can identify and block suspicious UDP packet patterns containing excessive numeric sequences within JSON data. Additionally, the application should be configured to implement proper timeout mechanisms and resource limits during JSON parsing operations to prevent indefinite resource consumption. The vulnerability aligns with ATT&CK technique T1498 Resource Exhaustion, where adversaries seek to consume system resources to deny service to legitimate users, and also maps to T1566 Impersonation tactics that leverage spoofed network packets to exploit application vulnerabilities. Security teams should monitor for exploitation attempts through network traffic analysis and implement proper logging to detect potential abuse of this vulnerability in production environments.