Vulnerability identifier: #VU11538
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-22
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Ruby
Universal components / Libraries /
Scripting languages
Vendor: Ruby
Description
The vulnerability allows a remote attacker to write arbitrary files on the target system.
The weakness exists in the Dir.mktmpdir method in the tmpdir library due to path traversal. A remote attacker can create a directory or a file at any directory in the prefix argument.
Mitigation
Update to versions 2.2.10, 2.3.7, 2.4.4 or 2.5.1.
Vulnerable software versions
Ruby: 2.2.0 - 2.6.0-preview1
External links
http://www.ruby-lang.org/en/news/2018/03/28/unintentional-file-and-directory-creation-with-director...
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.