RHEL 7 : nss and nspr (RHSA-2020:4076)

Critical Nessus Plugin ID 141059

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 5.9

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-2020:4076 advisory.

- nss: Out-of-bounds read when importing curve25519 private key (CVE-2019-11719)

- nss: PKCS#1 v1.5 signatures can be used for TLS 1.3 (CVE-2019-11727)

- 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: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state (CVE-2019-17023)

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

- nss: ECDSA timing attack mitigation bypass (CVE-2020-12401)

- nss: Side channel vulnerabilities during RSA key generation (CVE-2020-12402)

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

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

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 packages.

See Also

https://cwe.mitre.org/data/definitions/122.html

https://cwe.mitre.org/data/definitions/125.html

https://cwe.mitre.org/data/definitions/327.html

https://cwe.mitre.org/data/definitions/416.html

https://access.redhat.com/security/cve/CVE-2019-11719

https://access.redhat.com/security/cve/CVE-2019-11727

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-2019-17023

https://access.redhat.com/security/cve/CVE-2020-6829

https://access.redhat.com/security/cve/CVE-2020-12400

https://access.redhat.com/security/cve/CVE-2020-12401

https://access.redhat.com/security/cve/CVE-2020-12402

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

https://access.redhat.com/errata/RHSA-2020:4076

https://bugzilla.redhat.com/1728436

https://bugzilla.redhat.com/1730988

https://bugzilla.redhat.com/1774835

https://bugzilla.redhat.com/1775916

https://bugzilla.redhat.com/1791225

https://bugzilla.redhat.com/1826187

https://bugzilla.redhat.com/1826231

https://bugzilla.redhat.com/1851294

https://bugzilla.redhat.com/1853983

https://bugzilla.redhat.com/1868931

Plugin Details

Severity: Critical

ID: 141059

File Name: redhat-RHSA-2020-4076.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2020/09/30

Updated: 2020/11/19

Dependencies: 12634

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS Score Source: CVE-2019-17006

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7::client, cpe:/o:redhat:enterprise_linux:7::computenode, cpe:/o:redhat:enterprise_linux:7::server, cpe:/o:redhat:enterprise_linux:7::workstation, p-cpe:/a:redhat:enterprise_linux:nspr, p-cpe:/a:redhat:enterprise_linux:nspr-devel, 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, p-cpe:/a:redhat:enterprise_linux:nss-util, p-cpe:/a:redhat:enterprise_linux:nss-util-devel

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: 2020/09/29

Vulnerability Publication Date: 2019/07/09

Reference Information

CVE: CVE-2019-11719, CVE-2019-11727, CVE-2019-11756, CVE-2019-17006, CVE-2019-17023, CVE-2020-6829, CVE-2020-12400, CVE-2020-12401, CVE-2020-12402, CVE-2020-12403

BID: 109085, 109086

RHSA: 2020:4076

CWE: 122, 125, 327, 416