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AmazonALAS2-2023-2257

HistorySep 13, 2023 - 11:44 p.m.

Important: libssh2

2023-09-1323:44:00

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

7.6 High

AI Score

Confidence

High

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

0.0005 Low

EPSS

Percentile

18.0%

JSON

Issue Overview:

An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory. (CVE-2020-22218)

Affected Packages:

libssh2

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 libssh2 to update your system.

New Packages:

aarch64:  
    libssh2-1.4.3-12.amzn2.2.6.aarch64  
    libssh2-devel-1.4.3-12.amzn2.2.6.aarch64  
    libssh2-debuginfo-1.4.3-12.amzn2.2.6.aarch64  
  
i686:  
    libssh2-1.4.3-12.amzn2.2.6.i686  
    libssh2-devel-1.4.3-12.amzn2.2.6.i686  
    libssh2-debuginfo-1.4.3-12.amzn2.2.6.i686  
  
noarch:  
    libssh2-docs-1.4.3-12.amzn2.2.6.noarch  
  
src:  
    libssh2-1.4.3-12.amzn2.2.6.src  
  
x86_64:  
    libssh2-1.4.3-12.amzn2.2.6.x86_64  
    libssh2-devel-1.4.3-12.amzn2.2.6.x86_64  
    libssh2-debuginfo-1.4.3-12.amzn2.2.6.x86_64

Additional References

Red Hat: CVE-2020-22218

Mitre: CVE-2020-22218

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64libssh2< 1.4.3-12.amzn2.2.6libssh2-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux2aarch64libssh2-devel< 1.4.3-12.amzn2.2.6libssh2-devel-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux2aarch64libssh2-debuginfo< 1.4.3-12.amzn2.2.6libssh2-debuginfo-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux2i686libssh2< 1.4.3-12.amzn2.2.6libssh2-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux2i686libssh2-devel< 1.4.3-12.amzn2.2.6libssh2-devel-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux2i686libssh2-debuginfo< 1.4.3-12.amzn2.2.6libssh2-debuginfo-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux2noarchlibssh2-docs< 1.4.3-12.amzn2.2.6libssh2-docs-1.4.3-12.amzn2.2.6.noarch.rpm
Amazon Linux2x86_64libssh2< 1.4.3-12.amzn2.2.6libssh2-1.4.3-12.amzn2.2.6.x86_64.rpm
Amazon Linux2x86_64libssh2-devel< 1.4.3-12.amzn2.2.6libssh2-devel-1.4.3-12.amzn2.2.6.x86_64.rpm
Amazon Linux2x86_64libssh2-debuginfo< 1.4.3-12.amzn2.2.6libssh2-debuginfo-1.4.3-12.amzn2.2.6.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	2	aarch64	libssh2	< 1.4.3-12.amzn2.2.6	libssh2-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux	2	aarch64	libssh2-devel	< 1.4.3-12.amzn2.2.6	libssh2-devel-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux	2	aarch64	libssh2-debuginfo	< 1.4.3-12.amzn2.2.6	libssh2-debuginfo-1.4.3-12.amzn2.2.6.aarch64.rpm
Amazon Linux	2	i686	libssh2	< 1.4.3-12.amzn2.2.6	libssh2-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux	2	i686	libssh2-devel	< 1.4.3-12.amzn2.2.6	libssh2-devel-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux	2	i686	libssh2-debuginfo	< 1.4.3-12.amzn2.2.6	libssh2-debuginfo-1.4.3-12.amzn2.2.6.i686.rpm
Amazon Linux	2	noarch	libssh2-docs	< 1.4.3-12.amzn2.2.6	libssh2-docs-1.4.3-12.amzn2.2.6.noarch.rpm
Amazon Linux	2	x86_64	libssh2	< 1.4.3-12.amzn2.2.6	libssh2-1.4.3-12.amzn2.2.6.x86_64.rpm
Amazon Linux	2	x86_64	libssh2-devel	< 1.4.3-12.amzn2.2.6	libssh2-devel-1.4.3-12.amzn2.2.6.x86_64.rpm
Amazon Linux	2	x86_64	libssh2-debuginfo	< 1.4.3-12.amzn2.2.6	libssh2-debuginfo-1.4.3-12.amzn2.2.6.x86_64.rpm