This security advisory describes one medium risk vulnerability.
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]
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, 2.7.1, 2.7.2, 3.0.0CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.