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EulerOS Virtualization 2.9.1 : openssl (EulerOS-SA-2021-1960)

medium Nessus Plugin ID 150247

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the version of the openssl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

 - An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).(CVE-2021-3449)

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 openssl package.

See Also

http://www.nessus.org/u?7b3bc934

Plugin Details

Severity: Medium

ID: 150247

File Name: EulerOS_SA-2021-1960.nasl

Version: 1.4

Type: local

Published: 6/4/2021

Updated: 12/27/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.6

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

CVSS Score Source: CVE-2021-3449

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.9.1, p-cpe:/a:huawei:euleros:openssl-perl, p-cpe:/a:huawei:euleros:openssl-libs, p-cpe:/a:huawei:euleros:openssl

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/3/2021

Reference Information

CVE: CVE-2021-3449