CVE-2021-31810 Affecting ruby2.5-devel-extra package, versions <2.5.9-150000.4.23.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.29% (69th percentile)

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  • Snyk IDSNYK-SLES153-RUBY25DEVELEXTRA-2807985
  • published4 May 2022
  • disclosed3 May 2022

Introduced: 3 May 2022

CVE-2021-31810  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 ruby2.5-devel-extra to version 2.5.9-150000.4.23.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5-devel-extra package and not the ruby2.5-devel-extra package as distributed by SLES. See How to fix? for SLES:15.3 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