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amazonAmazonALAS-2023-1898
HistoryDec 18, 2023 - 9:20 a.m.

Medium: openssh

2023-12-1809:20:00
alas.aws.amazon.com
16
aws
openssh
update
cve-2023-48795
ssh
channel integrity
yum
red hat
mitre

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

5.6 Medium

AI Score

Confidence

High

0.962 High

EPSS

Percentile

99.5%

JSON

Issue Overview:

AWS is aware of CVE-2023-48795, also known as Terrapin, which is found in the SSH protocol and affects SSH channel integrity. A protocol extension has been introduced by OpenSSH which needs to be applied to both the client and the server in order to address this issue. We recommend customers update to the latest version of SSH. (CVE-2023-48795)

Affected Packages:

openssh

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

New Packages:

i686:  
    openssh-cavs-7.4p1-22.81.amzn1.i686  
    openssh-ldap-7.4p1-22.81.amzn1.i686  
    openssh-server-7.4p1-22.81.amzn1.i686  
    pam_ssh_agent_auth-0.10.3-2.22.81.amzn1.i686  
    openssh-clients-7.4p1-22.81.amzn1.i686  
    openssh-7.4p1-22.81.amzn1.i686  
    openssh-debuginfo-7.4p1-22.81.amzn1.i686  
    openssh-keycat-7.4p1-22.81.amzn1.i686  
  
src:  
    openssh-7.4p1-22.81.amzn1.src  
  
x86_64:  
    pam_ssh_agent_auth-0.10.3-2.22.81.amzn1.x86_64  
    openssh-debuginfo-7.4p1-22.81.amzn1.x86_64  
    openssh-cavs-7.4p1-22.81.amzn1.x86_64  
    openssh-keycat-7.4p1-22.81.amzn1.x86_64  
    openssh-7.4p1-22.81.amzn1.x86_64  
    openssh-clients-7.4p1-22.81.amzn1.x86_64  
    openssh-ldap-7.4p1-22.81.amzn1.x86_64  
    openssh-server-7.4p1-22.81.amzn1.x86_64

Additional References

Red Hat: CVE-2023-48795

Mitre: CVE-2023-48795

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686openssh-cavs< 7.4p1-22.81.amzn1openssh-cavs-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686openssh-ldap< 7.4p1-22.81.amzn1openssh-ldap-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686openssh-server< 7.4p1-22.81.amzn1openssh-server-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686pam_ssh_agent_auth< 0.10.3-2.22.81.amzn1pam_ssh_agent_auth-0.10.3-2.22.81.amzn1.i686.rpm
Amazon Linux1i686openssh-clients< 7.4p1-22.81.amzn1openssh-clients-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686openssh< 7.4p1-22.81.amzn1openssh-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686openssh-debuginfo< 7.4p1-22.81.amzn1openssh-debuginfo-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1i686openssh-keycat< 7.4p1-22.81.amzn1openssh-keycat-7.4p1-22.81.amzn1.i686.rpm
Amazon Linux1x86_64pam_ssh_agent_auth< 0.10.3-2.22.81.amzn1pam_ssh_agent_auth-0.10.3-2.22.81.amzn1.x86_64.rpm
Amazon Linux1x86_64openssh-debuginfo< 7.4p1-22.81.amzn1openssh-debuginfo-7.4p1-22.81.amzn1.x86_64.rpm
Rows per page:
1-10 of 161

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5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

5.6 Medium

AI Score

Confidence

High

0.962 High

EPSS

Percentile

99.5%

JSON
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