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- Snyk ID SNYK-DEBIAN11-RUBY27-1316286
- published 8 Jul 2021
- disclosed 13 Jul 2021
Introduced: 8 Jul 2021CVE-2021-31810 Open this link in a new tab
How to fix?
ruby2.7 to version 2.7.4-1 or higher.
Note: Versions mentioned in the description apply only to the upstream
ruby2.7 package and not the
ruby2.7 package as distributed by
How to fix? for
Debian:11 relevant fixed versions and status.
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).