ALAS-2024-2534

Related Vulnerabilities: CVE-2021-31810  

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). (CVE-2021-31810)

ALAS-2024-2534


Amazon Linux 2 Security Advisory: ALAS-2024-2534
Advisory Release Date: 2024-04-24 22:15 Pacific
Advisory Updated Date: 2024-04-24 22:15 Pacific
Severity: Medium

Issue Overview:

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). (CVE-2021-31810)


Affected Packages:

ruby


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update ruby to update your system.

New Packages:
aarch64:
    ruby-2.0.0.648-36.amzn2.0.9.aarch64
    ruby-devel-2.0.0.648-36.amzn2.0.9.aarch64
    ruby-libs-2.0.0.648-36.amzn2.0.9.aarch64
    rubygem-bigdecimal-1.2.0-36.amzn2.0.9.aarch64
    rubygem-io-console-0.4.2-36.amzn2.0.9.aarch64
    rubygem-json-1.7.7-36.amzn2.0.9.aarch64
    rubygem-psych-2.0.0-36.amzn2.0.9.aarch64
    ruby-tcltk-2.0.0.648-36.amzn2.0.9.aarch64
    ruby-debuginfo-2.0.0.648-36.amzn2.0.9.aarch64

i686:
    ruby-2.0.0.648-36.amzn2.0.9.i686
    ruby-devel-2.0.0.648-36.amzn2.0.9.i686
    ruby-libs-2.0.0.648-36.amzn2.0.9.i686
    rubygem-bigdecimal-1.2.0-36.amzn2.0.9.i686
    rubygem-io-console-0.4.2-36.amzn2.0.9.i686
    rubygem-json-1.7.7-36.amzn2.0.9.i686
    rubygem-psych-2.0.0-36.amzn2.0.9.i686
    ruby-tcltk-2.0.0.648-36.amzn2.0.9.i686
    ruby-debuginfo-2.0.0.648-36.amzn2.0.9.i686

noarch:
    rubygems-2.0.14.1-36.amzn2.0.9.noarch
    rubygems-devel-2.0.14.1-36.amzn2.0.9.noarch
    rubygem-rake-0.9.6-36.amzn2.0.9.noarch
    ruby-irb-2.0.0.648-36.amzn2.0.9.noarch
    rubygem-rdoc-4.0.0-36.amzn2.0.9.noarch
    ruby-doc-2.0.0.648-36.amzn2.0.9.noarch
    rubygem-minitest-4.3.2-36.amzn2.0.9.noarch

src:
    ruby-2.0.0.648-36.amzn2.0.9.src

x86_64:
    ruby-2.0.0.648-36.amzn2.0.9.x86_64
    ruby-devel-2.0.0.648-36.amzn2.0.9.x86_64
    ruby-libs-2.0.0.648-36.amzn2.0.9.x86_64
    rubygem-bigdecimal-1.2.0-36.amzn2.0.9.x86_64
    rubygem-io-console-0.4.2-36.amzn2.0.9.x86_64
    rubygem-json-1.7.7-36.amzn2.0.9.x86_64
    rubygem-psych-2.0.0-36.amzn2.0.9.x86_64
    ruby-tcltk-2.0.0.648-36.amzn2.0.9.x86_64
    ruby-debuginfo-2.0.0.648-36.amzn2.0.9.x86_64