Alibaba Cloud Linux 3 : 0044: ruby:2.7 (ALINUX3-SA-2021:0044)

high Nessus Plugin ID 236604

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0044 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2020-25613:
An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

CVE-2021-28965:
The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 236604

File Name: alinux3_sa_2021-0044.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2021-28965

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-json, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-xmlrpc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-psych, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-bundler, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygems, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-openssl-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-io-console-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-irb, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-default-gems, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-minitest, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-rdoc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygems-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-psych-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-bigdecimal, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-io-console, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-net-telnet, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-json-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-rake, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-openssl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-bigdecimal-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-power_assert, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rubygem-test-unit

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Alibaba/release, Host/Alibaba/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2021

Vulnerability Publication Date: 10/6/2020

Reference Information

CVE: CVE-2020-25613, CVE-2021-28965

Detections

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