RubyGems < 2.6.13 - Arbitrary File Overwrite

There is no check for name field in metadata.gz. By assigning a maliciously crafted string like ../../../../../any/where to the field, an attacker can create an arbitrary file out of the directory of the gem, or even replace an existing file with a malicious file. Proof of Concept 1: Create a fil...

RubyGems 2.6.13 - Arbitrary File Overwrite

RubyGems 2.6.13 - Arbitrary File Overwrite There is no check for name field in metadata.gz. By assigning a maliciously crafted string like ../../../../../any/where to the field, an attacker can create an arbitrary file out of the directory of the gem, or even replace an existing file with a...