EulerOS 2.0 SP8 : ruby (EulerOS-SA-2020-1590)

critical Nessus Plugin ID 136868
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability.
This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby.
Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.(CVE-2020-10663)

- An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap.
This may expose possibly sensitive data from the interpreter.(CVE-2020-10933)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected ruby packages.

See Also

http://www.nessus.org/u?1126f8ae

Plugin Details

Severity: Critical

ID: 136868

File Name: EulerOS_SA-2020-1590.nasl

Version: 1.7

Type: local

Published: 5/26/2020

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-5312

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:ruby, p-cpe:/a:huawei:euleros:ruby-irb, p-cpe:/a:huawei:euleros:ruby-libs, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2020

Reference Information

CVE: CVE-2020-10663, CVE-2020-10933