RHEL 7 : nss-softokn (RHSA-2021:0758)

critical Nessus Plugin ID 147208

Synopsis

The remote Red Hat host is missing one or more security updates for nss-softokn.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0758 advisory.

The nss-softokn package provides the Network Security Services Softoken Cryptographic Module.

Security Fix(es):

* nss: Use-after-free in sftk_FreeSession due to improper refcounting (CVE-2019-11756)

* nss: Check length of inputs for cryptographic primitives (CVE-2019-17006)

* nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read (CVE-2020-12403)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL nss-softokn package based on the guidance in RHSA-2021:0758.

See Also

http://www.nessus.org/u?49c03f30

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/errata/RHSA-2021:0758

https://bugzilla.redhat.com/show_bug.cgi?id=1774835

https://bugzilla.redhat.com/show_bug.cgi?id=1775916

https://bugzilla.redhat.com/show_bug.cgi?id=1868931

Plugin Details

Severity: Critical

ID: 147208

File Name: redhat-RHSA-2021-0758.nasl

Version: 1.13

Type: local

Agent: unix

Published: 3/9/2021

Updated: 11/5/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2019-17006

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl-devel, cpe:/o:redhat:rhel_e4s:7.4, p-cpe:/a:redhat:enterprise_linux:nss-softokn, cpe:/o:redhat:rhel_aus:7.4, p-cpe:/a:redhat:enterprise_linux:nss-softokn-devel, cpe:/o:redhat:rhel_tus:7.4, p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/9/2021

Vulnerability Publication Date: 12/3/2019

Reference Information

CVE: CVE-2019-11756, CVE-2019-17006, CVE-2020-12403

CWE: 122, 125, 416

IAVA: 2019-A-0438-S

RHSA: 2021:0758