Medium: nss

2021-07-0818:38:00

alas.aws.amazon.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.007 Low

EPSS

Percentile

80.2%

JSON

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

Additional References

Red Hat: CVE-2020-25648

Mitre: CVE-2020-25648

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686nss-debuginfo< 3.53.1-7.85.amzn1nss-debuginfo-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1i686nss< 3.53.1-7.85.amzn1nss-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1i686nss-devel< 3.53.1-7.85.amzn1nss-devel-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1i686nss-tools< 3.53.1-7.85.amzn1nss-tools-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1i686nss-pkcs11-devel< 3.53.1-7.85.amzn1nss-pkcs11-devel-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1i686nss-sysinit< 3.53.1-7.85.amzn1nss-sysinit-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux1x86_64nss-debuginfo< 3.53.1-7.85.amzn1nss-debuginfo-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux1x86_64nss-tools< 3.53.1-7.85.amzn1nss-tools-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux1x86_64nss-sysinit< 3.53.1-7.85.amzn1nss-sysinit-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux1x86_64nss-pkcs11-devel< 3.53.1-7.85.amzn1nss-pkcs11-devel-3.53.1-7.85.amzn1.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	1	i686	nss-debuginfo	< 3.53.1-7.85.amzn1	nss-debuginfo-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	i686	nss	< 3.53.1-7.85.amzn1	nss-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	i686	nss-devel	< 3.53.1-7.85.amzn1	nss-devel-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	i686	nss-tools	< 3.53.1-7.85.amzn1	nss-tools-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	i686	nss-pkcs11-devel	< 3.53.1-7.85.amzn1	nss-pkcs11-devel-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	i686	nss-sysinit	< 3.53.1-7.85.amzn1	nss-sysinit-3.53.1-7.85.amzn1.i686.rpm
Amazon Linux	1	x86_64	nss-debuginfo	< 3.53.1-7.85.amzn1	nss-debuginfo-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	nss-tools	< 3.53.1-7.85.amzn1	nss-tools-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	nss-sysinit	< 3.53.1-7.85.amzn1	nss-sysinit-3.53.1-7.85.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	nss-pkcs11-devel	< 3.53.1-7.85.amzn1	nss-pkcs11-devel-3.53.1-7.85.amzn1.x86_64.rpm