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Oracle Linux 7 : nss, / nss-softokn, / nss-util, / and / nspr (ELSA-2019-2237)

medium Nessus Plugin ID 180759

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2237 advisory.

 - Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the
 _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP.
 To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host. (CVE-2018-0495)

 - A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content. This is a variant of the Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) and affects all NSS versions prior to NSS 3.41. (CVE-2018-12404)

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://linux.oracle.com/errata/ELSA-2019-2237.html

Plugin Details

Severity: Medium

ID: 180759

File Name: oraclelinux_ELSA-2019-2237.nasl

Version: 1.0

Type: local

Agent: unix

Published: 9/7/2023

Updated: 9/7/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2018-12404

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:nspr, p-cpe:/a:oracle:linux:nspr-devel, p-cpe:/a:oracle:linux:nss, p-cpe:/a:oracle:linux:nss-devel, p-cpe:/a:oracle:linux:nss-pkcs11-devel, p-cpe:/a:oracle:linux:nss-softokn, p-cpe:/a:oracle:linux:nss-softokn-devel, p-cpe:/a:oracle:linux:nss-softokn-freebl, p-cpe:/a:oracle:linux:nss-softokn-freebl-devel, p-cpe:/a:oracle:linux:nss-sysinit, p-cpe:/a:oracle:linux:nss-tools, p-cpe:/a:oracle:linux:nss-util, p-cpe:/a:oracle:linux:nss-util-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/13/2019

Vulnerability Publication Date: 6/13/2018

Reference Information

CVE: CVE-2018-0495, CVE-2018-12404