RHEL 7 : nss and nss-softokn (RHSA-2021:0876)

critical Nessus Plugin ID 147829

Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0876 advisory.

- 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: Handling of Netscape Certificate Sequences in CERT_DecodeCertPackage() may crash with a NULL deref leading to DoS (CVE-2019-17007)

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

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 affected packages.

See Also

https://access.redhat.com/security/cve/CVE-2019-11756

https://access.redhat.com/security/cve/CVE-2019-17006

https://access.redhat.com/security/cve/CVE-2019-17007

https://access.redhat.com/security/cve/CVE-2020-12403

https://access.redhat.com/errata/RHSA-2021:0876

https://bugzilla.redhat.com/1703979

https://bugzilla.redhat.com/1774835

https://bugzilla.redhat.com/1775916

https://bugzilla.redhat.com/1868931

Plugin Details

Severity: Critical

ID: 147829

File Name: redhat-RHSA-2021-0876.nasl

Version: 1.12

Type: local

Agent: unix

Published: 3/17/2021

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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: cpe:/o:redhat:rhel_aus:7.6, cpe:/o:redhat:rhel_e4s:7.6, cpe:/o:redhat:rhel_eus:7.6, cpe:/o:redhat:rhel_tus:7.6, p-cpe:/a:redhat:enterprise_linux:nss, p-cpe:/a:redhat:enterprise_linux:nss-devel, p-cpe:/a:redhat:enterprise_linux:nss-pkcs11-devel, p-cpe:/a:redhat:enterprise_linux:nss-softokn, p-cpe:/a:redhat:enterprise_linux:nss-softokn-devel, p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl, p-cpe:/a:redhat:enterprise_linux:nss-softokn-freebl-devel, p-cpe:/a:redhat:enterprise_linux:nss-sysinit, p-cpe:/a:redhat:enterprise_linux:nss-tools

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: 3/16/2021

Vulnerability Publication Date: 7/30/2019

Reference Information

CVE: CVE-2019-11756, CVE-2019-17006, CVE-2019-17007, CVE-2020-12403

CWE: 122, 125, 416, 476

IAVA: 2019-A-0438-S

RHSA: 2021:0876