Alibaba Cloud Linux 3 : 0015: nss (ALINUX3-SA-2021:0015)

critical Nessus Plugin ID 236475

Synopsis

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

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0015 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2020-12400:
When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

CVE-2020-12403:
** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

CVE-2019-11756:
Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.

CVE-2019-17006:
In Network Security Services (NSS) before 3.46, several cryptographic primitives had missing length checks. In cases where the application calling the library did not perform a sanity check on the inputs it could result in a crash due to a buffer overflow.

CVE-2019-17023:
After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

CVE-2020-12402:
During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes.
*Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.

CVE-2020-6829:
When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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 affected packages.

Plugin Details

Severity: Critical

ID: 236475

File Name: alinux3_sa_2021-0015.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: 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: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-sysinit, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn-freebl-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-sysinit-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-util, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn-freebl-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-pkcs11-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-util-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-util-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-softokn-freebl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-tools-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:nss-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/26/2021

Vulnerability Publication Date: 12/3/2019

Reference Information

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

Detections

Analytics