Detections
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Amazon Linux 2 : ruby (ALASRUBY3.0-2023-003)
critical Nessus Plugin ID 181933
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Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of ruby installed on the remote host is prior to 3.0.3-154. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2RUBY3.0-2023-003 advisory.- CGI.escape_html in Ruby before 2.7.5 and 3.x before 3.0.3 has an integer overflow and resultant buffer overflow via a long string on platforms (such as Windows) where size_t and long have different numbers of bytes. This also affects the CGI gem before 0.3.1 for Ruby. (CVE-2021-41816)
- Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1. (CVE-2021-41817)
- CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby. (CVE-2021-41819)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update ruby' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALASRUBY3.0-2023-003.html
https://alas.aws.amazon.com/cve/html/CVE-2021-41816.html
https://alas.aws.amazon.com/cve/html/CVE-2021-41817.html
Plugin Details
Severity: Critical
ID: 181933
File Name: al2_ALASRUBY3_0-2023-003.nasl
Version: 1.1
Type: local
Agent: unix
Published: 9/27/2023
Updated: 9/28/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2021-41816
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:ruby, p-cpe:/a:amazon:linux:ruby-debuginfo, p-cpe:/a:amazon:linux:ruby-default-gems, p-cpe:/a:amazon:linux:ruby-devel, p-cpe:/a:amazon:linux:ruby-doc, p-cpe:/a:amazon:linux:ruby-libs, p-cpe:/a:amazon:linux:rubygem-bigdecimal, p-cpe:/a:amazon:linux:rubygem-bundler, p-cpe:/a:amazon:linux:rubygem-io-console, p-cpe:/a:amazon:linux:rubygem-irb, p-cpe:/a:amazon:linux:rubygem-json, p-cpe:/a:amazon:linux:rubygem-minitest, p-cpe:/a:amazon:linux:rubygem-power_assert, p-cpe:/a:amazon:linux:rubygem-psych, p-cpe:/a:amazon:linux:rubygem-rake, p-cpe:/a:amazon:linux:rubygem-rbs, p-cpe:/a:amazon:linux:rubygem-rdoc, p-cpe:/a:amazon:linux:rubygem-rexml, p-cpe:/a:amazon:linux:rubygem-rss, p-cpe:/a:amazon:linux:rubygem-test-unit, p-cpe:/a:amazon:linux:rubygem-typeprof, p-cpe:/a:amazon:linux:rubygems, p-cpe:/a:amazon:linux:rubygems-devel, cpe:/o:amazon:linux:2
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/21/2023
Vulnerability Publication Date: 1/1/2022