EulerOS 2.0 SP2 : libgcrypt (EulerOS-SA-2021-2395)

high Nessus Plugin ID 153300
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote EulerOS host is missing a security update.

Description

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

- 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. (There is also an interoperability problem because the selection of the k integer value does not properly consider the differences between basic ElGamal encryption and generalized ElGamal encryption.) 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 package.

See Also

http://www.nessus.org/u?aeb66c8e

Plugin Details

Severity: High

ID: 153300

File Name: EulerOS_SA-2021-2395.nasl

Version: 1.2

Type: local

Published: 9/14/2021

Updated: 9/16/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:libgcrypt, p-cpe:/a:huawei:euleros:libgcrypt-devel, 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: 9/14/2021

Reference Information

CVE: CVE-2021-33560