Low: openssh

Issue Overview:

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.(CVE-2018-15473)

Affected Packages:

openssh

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 openssh to update your system.

New Packages:

i686:  
    openssh-7.4p1-16.amzn2.0.5.i686  
    openssh-clients-7.4p1-16.amzn2.0.5.i686  
    openssh-server-7.4p1-16.amzn2.0.5.i686  
    openssh-server-sysvinit-7.4p1-16.amzn2.0.5.i686  
    openssh-ldap-7.4p1-16.amzn2.0.5.i686  
    openssh-keycat-7.4p1-16.amzn2.0.5.i686  
    openssh-askpass-7.4p1-16.amzn2.0.5.i686  
    openssh-cavs-7.4p1-16.amzn2.0.5.i686  
    pam_ssh_agent_auth-0.10.3-2.16.amzn2.0.5.i686  
    openssh-debuginfo-7.4p1-16.amzn2.0.5.i686  
  
src:  
    openssh-7.4p1-16.amzn2.0.5.src  
  
x86_64:  
    openssh-7.4p1-16.amzn2.0.5.x86_64  
    openssh-clients-7.4p1-16.amzn2.0.5.x86_64  
    openssh-server-7.4p1-16.amzn2.0.5.x86_64  
    openssh-server-sysvinit-7.4p1-16.amzn2.0.5.x86_64  
    openssh-ldap-7.4p1-16.amzn2.0.5.x86_64  
    openssh-keycat-7.4p1-16.amzn2.0.5.x86_64  
    openssh-askpass-7.4p1-16.amzn2.0.5.x86_64  
    openssh-cavs-7.4p1-16.amzn2.0.5.x86_64  
    pam_ssh_agent_auth-0.10.3-2.16.amzn2.0.5.x86_64  
    openssh-debuginfo-7.4p1-16.amzn2.0.5.x86_64  

Additional References

Red Hat: CVE-2018-15473

Mitre: CVE-2018-15473