ALAS-2021-1518


Amazon Linux AMI Security Advisory: ALAS-2021-1518
Advisory Release Date: 2021-07-08 18:38 Pacific
Advisory Updated Date: 2021-07-12 21:53 Pacific
Severity: Medium
References: CVE-2020-25648 

Issue Overview:

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. (CVE-2020-25648)


Affected Packages:

nss


Issue Correction:
Run yum update nss to update your system.

New Packages:
i686:
    nss-debuginfo-3.53.1-7.85.amzn1.i686
    nss-3.53.1-7.85.amzn1.i686
    nss-devel-3.53.1-7.85.amzn1.i686
    nss-tools-3.53.1-7.85.amzn1.i686
    nss-pkcs11-devel-3.53.1-7.85.amzn1.i686
    nss-sysinit-3.53.1-7.85.amzn1.i686

src:
    nss-3.53.1-7.85.amzn1.src

x86_64:
    nss-debuginfo-3.53.1-7.85.amzn1.x86_64
    nss-tools-3.53.1-7.85.amzn1.x86_64
    nss-sysinit-3.53.1-7.85.amzn1.x86_64
    nss-pkcs11-devel-3.53.1-7.85.amzn1.x86_64
    nss-3.53.1-7.85.amzn1.x86_64
    nss-devel-3.53.1-7.85.amzn1.x86_64