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EulerOS Virtualization 2.9.0 : libgcrypt (EulerOS-SA-2021-2795)

high Nessus Plugin ID 155499

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the versions of the libgcrypt package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 - Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP. (CVE-2021-33560)

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 libgcrypt packages.

See Also

http://www.nessus.org/u?bc51900d

Plugin Details

Severity: High

ID: 155499

File Name: EulerOS_SA-2021-2795.nasl

Version: 1.3

Type: local

Published: 11/17/2021

Updated: 4/18/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-33560

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:H/I:N/A:N

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:libgcrypt, cpe:/o:huawei:euleros:uvp:2.9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/17/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-33560