High · published February 6, 2019
⚡ A sneaky stack-based buffer overflow in libcurl is lurking in versions 7.36.0 to before 7.64.0, just waiting for the right moment to strike! Think of this vulnerability like a crowded elevator that can’t handle too many people. If one too many passengers cram in, the elevator’s gonna break down, and the system can't handle the overflow! If exploited, an attacker could send a specially crafted NTLMv2 response, causing the application to crash or even execute arbitrary code. That’s a game-changing situation, allowing the attacker to potentially take control of affected systems!
Think of this vulnerability like a crowded elevator that can’t handle too many people. If one too many passengers cram in, the elevator’s gonna break down, and the system can't handle the overflow! This vulnerability arises from incorrect checks in the function generating NTLM type-3 headers, which can allow attackers to overflow the stack by sending overly large NTLM response headers, exceeding the local buffer's capacity.
If exploited, an attacker could send a specially crafted NTLMv2 response, causing the application to crash or even execute arbitrary code. That’s a game-changing situation, allowing the attacker to potentially take control of affected systems! Upgrade libcurl to version 7.64.0 or later immediately to patch this vulnerability. Additionally, review your application’s error handling for NTLM authentication to ensure it properly filters incoming data. You've got this! Stay vigilant and keep your systems secure! 🛡️