CVE-2023-52355

Отчет

The identified out-of-memory vulnerability in libtiff, triggered by a crafted TIFF file passed to the TIFFRasterScanlineSize64() API, presents a moderate severity concern rather than a important one due to several factors. Primarily, the exploit requires the crafted input to be smaller than 379 KB, imposing a limitation on the potential impact and reducing the likelihood of successful exploitation in practical scenarios. Furthermore, the nature of the vulnerability is limited to denial-of-service attacks, which, although disruptive, do not inherently pose a direct risk of data compromise or system compromise. However, it's important to acknowledge that denial-of-service attacks can still have significant operational implications, particularly in environments reliant on continuous availability. Within regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-787: Out-of-bounds Write vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low. The platform enforces hardening guidelines to apply the most restrictive settings necessary for operational requirements. Baseline configurations and system controls ensure secure software settings, while least functionality reduces the attack surface by disabling unauthorized services and ports. The environment employs IPS/IDS and antimalware solutions to detect and prevent malicious code exploiting out-of-bounds write vulnerabilities, using mechanisms such as file integrity monitoring and patch management. Robust input validation and error handling ensure all user inputs are thoroughly validated, preventing instability, data exposure, or privilege escalation. Finally, the platform uses memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to strengthen resilience against out-of-bounds write exploits.