Low: openssh

Issue Overview:

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.(CVE-2017-15906)

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:

src:  
    openssh-7.4p1-16.amzn2.0.1.src  
  
x86_64:  
    openssh-7.4p1-16.amzn2.0.1.x86_64  
    openssh-clients-7.4p1-16.amzn2.0.1.x86_64  
    openssh-server-7.4p1-16.amzn2.0.1.x86_64  
    openssh-server-sysvinit-7.4p1-16.amzn2.0.1.x86_64  
    openssh-ldap-7.4p1-16.amzn2.0.1.x86_64  
    openssh-keycat-7.4p1-16.amzn2.0.1.x86_64  
    openssh-askpass-7.4p1-16.amzn2.0.1.x86_64  
    openssh-cavs-7.4p1-16.amzn2.0.1.x86_64  
    pam_ssh_agent_auth-0.10.3-2.16.amzn2.x86_64  
    openssh-debuginfo-7.4p1-16.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2017-15906

Mitre: CVE-2017-15906