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amazonAmazonALAS2-2019-1172
HistoryMar 07, 2019 - 5:59 a.m.

Medium: golang

2019-03-0705:59:00
alas.aws.amazon.com
20
golang
denial of service
ecdh
private key recovery
vulnerability
update
amazon linux 2
cve-2019-6486

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

8.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.017

Percentile

88.1%

Issue Overview:

Go mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.(CVE-2019-6486)

Note: This CVE is also fixed in golang-1.11.3-2.amzn2.0.2 in the golang1.11 extras repository.

Affected Packages:

golang

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    golang-1.9.4-3.amzn2.0.1.aarch64  
    golang-bin-1.9.4-3.amzn2.0.1.aarch64  
  
noarch:  
    golang-docs-1.9.4-3.amzn2.0.1.noarch  
    golang-misc-1.9.4-3.amzn2.0.1.noarch  
    golang-tests-1.9.4-3.amzn2.0.1.noarch  
    golang-src-1.9.4-3.amzn2.0.1.noarch  
  
src:  
    golang-1.9.4-3.amzn2.0.1.src  
  
x86_64:  
    golang-1.9.4-3.amzn2.0.1.x86_64  
    golang-bin-1.9.4-3.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2019-6486

Mitre: CVE-2019-6486

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

8.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.017

Percentile

88.1%