CVE-2023-2873 in Twister
Summary
by MITRE • 05/24/2023
A vulnerability classified as critical was found in Twister Antivirus 8. This vulnerability affects the function 0x804f2143/0x804f217f/0x804f214b/0x80800043 in the library filppd.sys of the component IoControlCode Handler. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-229852. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 06/17/2023
This critical vulnerability in Twister Antivirus 8 represents a significant memory corruption flaw within the filppd.sys driver component that operates through the IoControlCode Handler function. The affected functions at addresses 0x804f2143, 0x804f217f, 0x804f214b, and 0x80800043 demonstrate a fundamental weakness in the driver's input validation mechanisms, creating potential for arbitrary code execution when exploited. The vulnerability's classification as critical indicates severe security implications that could compromise system integrity and confidentiality. This memory corruption issue stems from improper handling of input parameters within the kernel-mode driver, where insufficient bounds checking and validation allows malicious data to overwrite critical memory regions.
The attack vector requires local access to the system, meaning an attacker must already have user-level privileges or physical access to execute the exploit effectively. This limitation reduces the vulnerability's exposure compared to remote attack vectors but does not diminish its severity given that local privilege escalation or system compromise remains possible. The public disclosure of this exploit creates an immediate threat landscape where adversaries can leverage the known vulnerability to gain elevated privileges or execute malicious code within the targeted system environment. The lack of vendor response to early disclosure attempts suggests either inadequate security monitoring or delayed remediation processes that leave users exposed to potential exploitation.
From a technical perspective, this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflows, indicating potential memory corruption patterns in the driver's handling of IOCTL (Input/Output Control) operations. The ATT&CK framework categorizes this vulnerability under T1059.003 for command and scripting interpreter, as exploitation could enable attackers to execute arbitrary commands on the compromised system. The IoControlCode Handler functions represent a critical attack surface where improper input validation allows attackers to manipulate driver behavior through crafted control codes, potentially leading to privilege escalation or system compromise.
Mitigation strategies should prioritize immediate vendor patching if available, though the lack of vendor response suggests users may need to implement alternative security measures. System administrators should consider disabling the vulnerable driver component when possible, implementing strict access controls, and monitoring for suspicious IOCTL activity patterns. The vulnerability demonstrates the critical importance of kernel-mode security validation and proper input sanitization, as these functions operate with the highest system privileges and can cause catastrophic system failures when compromised. Organizations should also consider implementing runtime protection mechanisms and behavioral monitoring to detect potential exploitation attempts before they can cause significant damage to the system infrastructure.