vulnerability
Ubuntu: USN-5020-1 (CVE-2021-31810): Ruby vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jul 13, 2021 | Jul 22, 2021 | Mar 27, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Jul 13, 2021
Added
Jul 22, 2021
Modified
Mar 27, 2026
Description
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).
Solutions
ubuntu-pro-upgrade-libruby2-3ubuntu-pro-upgrade-libruby2-5ubuntu-pro-upgrade-libruby2-7ubuntu-pro-upgrade-ruby2-3ubuntu-pro-upgrade-ruby2-5ubuntu-pro-upgrade-ruby2-7
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.