Amazon Linux AMI update for ruby3.2

Published: 2024-08-06

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-28755 CVE-2023-28756
CWE-ID	CWE-185
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system ruby3.2 Operating systems & Components / Operating system package or component
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect Regular Expression

EUVDB-ID: #VU74004

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-28755

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing URLs. A remote attacker can pass specially crafted URL to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Update the affected packages:

aarch64:
    ruby3.2-rubygem-rbs-debuginfo-2.8.2-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-bigdecimal-debuginfo-3.1.3-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-io-console-debuginfo-0.6.0-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-psych-debuginfo-5.0.1-180.amzn2023.0.1.aarch64
    ruby3.2-debugsource-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-libs-debuginfo-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-psych-5.0.1-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-json-2.6.3-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-json-debuginfo-2.6.3-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-bigdecimal-3.1.3-180.amzn2023.0.1.aarch64
    ruby3.2-devel-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-libs-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-bundled-gems-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-rbs-2.8.2-180.amzn2023.0.1.aarch64
    ruby3.2-bundled-gems-debuginfo-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-rubygem-io-console-0.6.0-180.amzn2023.0.1.aarch64
    ruby3.2-debuginfo-3.2.2-180.amzn2023.0.1.aarch64
    ruby3.2-3.2.2-180.amzn2023.0.1.aarch64

noarch:
    ruby3.2-rubygem-minitest-5.16.3-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-irb-1.6.2-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-rake-13.0.6-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-power_assert-2.0.3-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-typeprof-0.21.3-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-rdoc-6.5.0-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-rss-0.2.9-180.amzn2023.0.1.noarch
    ruby3.2-rubygems-3.4.10-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-rexml-3.2.5-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-test-unit-3.5.7-180.amzn2023.0.1.noarch
    ruby3.2-default-gems-3.2.2-180.amzn2023.0.1.noarch
    ruby3.2-rubygem-bundler-2.4.10-180.amzn2023.0.1.noarch
    ruby3.2-rubygems-devel-3.4.10-180.amzn2023.0.1.noarch
    ruby3.2-doc-3.2.2-180.amzn2023.0.1.noarch

src:
    ruby3.2-3.2.2-180.amzn2023.0.1.src

x86_64:
    ruby3.2-rubygem-psych-debuginfo-5.0.1-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-io-console-debuginfo-0.6.0-180.amzn2023.0.1.x86_64
    ruby3.2-devel-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-bigdecimal-3.1.3-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-json-debuginfo-2.6.3-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-json-2.6.3-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-psych-5.0.1-180.amzn2023.0.1.x86_64
    ruby3.2-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-debugsource-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-bundled-gems-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-bundled-gems-debuginfo-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-rbs-2.8.2-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-io-console-0.6.0-180.amzn2023.0.1.x86_64
    ruby3.2-debuginfo-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-bigdecimal-debuginfo-3.1.3-180.amzn2023.0.1.x86_64
    ruby3.2-libs-3.2.2-180.amzn2023.0.1.x86_64
    ruby3.2-rubygem-rbs-debuginfo-2.8.2-180.amzn2023.0.1.x86_64
    ruby3.2-libs-debuginfo-3.2.2-180.amzn2023.0.1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

ruby3.2: before 3.2.2-180

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/AL2023/ALAS-2023-158.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Incorrect Regular Expression

EUVDB-ID: #VU74007