Exposure of Resource to Wrong Sphere Affecting ruby2.5 package, versions <2.5.1-1ubuntu1.10


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1% (85th percentile)

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  • Snyk IDSNYK-UBUNTU1804-RUBY25-1319119
  • published15 Jul 2021
  • disclosed13 Jul 2021

Introduced: 13 Jul 2021

CVE-2021-31810  (opens in a new tab)
CWE-668  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 ruby2.5 to version 2.5.1-1ubuntu1.10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 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).

CVSS Scores

version 3.1