RHEL 8 : nss (RHSA-2021:0538)

critical Nessus Plugin ID 146550

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Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0538 advisory.

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

Security Fix(es):

* nss: Side channel attack on ECDSA signature generation (CVE-2020-6829)

* nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function (CVE-2020-12400)

* 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.

Bug Fix(es):

* Support key wrap/unwrap with RSA-OAEP (BZ#1896431)

* 1536bit group from RFC3526 is allowed in FIPS mode when in policy DH-MIN is set to be lower than 1536 (BZ#1896432)

* when NSS_SDB_USE_CACHE not set, after curl access https, dentry increase but never released - consider alternative algorithm for benchmarking ACCESS call in sdb_measureAccess [rhel-8] (BZ#1896933)

* Policy should allow overriding library defaults (BZ#1898702)

* KDF-self-tests-induced changes for nss in RHEL 8.4 (BZ#1898953)

* nss: non-blocksize requests to IKEv1 KDF returns bogus output (BZ#1904408)

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 package based on the guidance in RHSA-2021:0538.

Plugin Details

Severity: Critical

ID: 146550

File Name: redhat-RHSA-2021-0538.nasl

Version: 1.14

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 2/16/2021

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2020-12403

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl-devel, p-cpe:/a:redhat:enterprise_linux:nss-softokn, p-cpe:/a:redhat:enterprise_linux:nss-devel, p-cpe:/a:redhat:enterprise_linux:nss-tools, p-cpe:/a:redhat:enterprise_linux:nss-util, p-cpe:/a:redhat:enterprise_linux:nss-sysinit, p-cpe:/a:redhat:enterprise_linux:nss-softokn-devel, p-cpe:/a:redhat:enterprise_linux:nss-util-devel, p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl, p-cpe:/a:redhat:enterprise_linux:nss, cpe:/o:redhat:enterprise_linux:8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/16/2021

Vulnerability Publication Date: 8/13/2020

Reference Information

CVE: CVE-2020-12400, CVE-2020-12401, CVE-2020-12403, CVE-2020-6829

CWE: 125, 327

IAVA: 2020-A-0391-S

RHSA: 2021:0538

Detections

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