CVE-2023-38545: High Severity cURL Vulnerability Detection

A recently disclosed high-severity vulnerability in cURL, identified as CVE-2023-38545, poses potential risks of remote code execution but is not currently deemed critical due to the complexity of successful exploitation. The vulnerability, a SOCKS5 heap buffer overflow, affects cURL versions from 7.69.0 to 8.3.0 and requires specific conditions to be exploited, such as the use of domain names exceeding a certain length in a SOCKS5 proxy setting. Detecting this vulnerability is challenging, particularly in libcurl, as it could be embedded within any program, leading experts to recommend focusing on detecting post-exploitation behaviors instead. Tools like Falco can help in identifying suspicious activity by monitoring unexpected process launches through cURL when SOCKS5 options are used. While direct exploitation detection remains difficult, monitoring for post-exploitation actions offers a more practical approach to mitigating potential threats.