Photon OS 3.0: Libgcrypt PHSA-2021-3.0-0257

high Nessus Plugin ID 153185

Synopsis

The remote PhotonOS host is missing multiple security updates.

Description

An update of the libgcrypt package has been released.

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

Solution

Update the affected Linux packages.

Plugin Details

Severity: High

ID: 153185

File Name: PhotonOS_PHSA-2021-3_0-0257_libgcrypt.nasl

Version: 1.3

Type: local

Family: PhotonOS Local Security Checks

Published: 9/9/2021

Updated: 9/20/2021

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:vmware:photonos:libgcrypt, cpe:/o:vmware:photonos:3.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-33560

Detections

Analytics