Debian DSA-5067-1 : ruby2.7 - security update

critical Nessus Plugin ID 157380

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5067 advisory.

- 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)

- 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)

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

Solution

Upgrade the ruby2.7 packages.

For the stable distribution (bullseye), these problems have been fixed in version 2.7.4-1+deb11u1.

Plugin Details

Severity: Critical

ID: 157380

File Name: debian_DSA-5067.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/4/2022

Updated: 11/17/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, 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:debian:debian_linux:libruby2.7, p-cpe:/a:debian:debian_linux:ruby2.7, p-cpe:/a:debian:debian_linux:ruby2.7-dev, p-cpe:/a:debian:debian_linux:ruby2.7-doc, cpe:/o:debian:debian_linux:11.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/3/2022

Vulnerability Publication Date: 1/1/2022

Reference Information

CVE: CVE-2021-41816, CVE-2021-41817, CVE-2021-41819

Detections

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