This security bulletin contains one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in tmpdir library. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.Mitigation
Install updates from vendor's website.Vulnerable software versions
Ruby: 2.7.0 - 3.0.0
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?