ruby: Buffer underrun vulnerability in Kernel.sprintf

A buffer underflow was found in ruby's sprintf function. An attacker, with ability to control its format string parameter, could send a specially crafted string that would disclose heap memory or crash the interpreter...

ruby: Buffer underrun vulnerability in Kernel.sprintf

A buffer underflow was found in ruby's sprintf function. An attacker, with ability to control its format string parameter, could send a specially crafted string that would disclose heap memory or crash the interpreter...

Medium: ruby24

Issue Overview: Arbitrary heap exposure during a JSON.generate call Ruby through 2.2.7, 2.3.x through 2.3.4, and 2.4.x through 2.4.1 can expose arbitrary memory during a JSON.generate call. The issues lies in using strdup in ext/json/ext/generator/generator.c, which will stop after encountering a...

Buffer underrun vulnerability in Kernel.sprintf

There is a buffer underrun vulnerability in the sprintf method of Kernel module. If a malicious format string which contains a precious specifier is passed and a huge minus value is also passed to the specifier, buffer underrun may be caused. In such situation, the result may contains heap, or th...