Medium: openssh

2015-07-2210:00:00

alas.aws.amazon.com

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.012 Low

EPSS

Percentile

85.3%

JSON

Issue Overview:

It was reported that when forwarding X11 connections with ForwardX11Trusted=no, connections made after ForwardX11Timeout expired could be permitted and no longer subject to XSECURITY restrictions because of an ineffective timeout check in ssh(1) coupled with “fail open” behavior in the X11 server when clients attempted connections with expired credentials.

Affected Packages:

openssh

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

New Packages:

i686:  
    openssh-server-6.2p2-8.44.amzn1.i686  
    openssh-debuginfo-6.2p2-8.44.amzn1.i686  
    openssh-clients-6.2p2-8.44.amzn1.i686  
    pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.i686  
    openssh-6.2p2-8.44.amzn1.i686  
    openssh-ldap-6.2p2-8.44.amzn1.i686  
    openssh-keycat-6.2p2-8.44.amzn1.i686  
  
src:  
    openssh-6.2p2-8.44.amzn1.src  
  
x86_64:  
    openssh-6.2p2-8.44.amzn1.x86_64  
    openssh-keycat-6.2p2-8.44.amzn1.x86_64  
    pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.x86_64  
    openssh-clients-6.2p2-8.44.amzn1.x86_64  
    openssh-debuginfo-6.2p2-8.44.amzn1.x86_64  
    openssh-ldap-6.2p2-8.44.amzn1.x86_64  
    openssh-server-6.2p2-8.44.amzn1.x86_64

Additional References

Red Hat: CVE-2015-5352

Mitre: CVE-2015-5352

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686openssh-server< 6.2p2-8.44.amzn1openssh-server-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1i686openssh-debuginfo< 6.2p2-8.44.amzn1openssh-debuginfo-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1i686openssh-clients< 6.2p2-8.44.amzn1openssh-clients-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1i686pam_ssh_agent_auth< 0.9.3-5.8.44.amzn1pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.i686.rpm
Amazon Linux1i686openssh< 6.2p2-8.44.amzn1openssh-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1i686openssh-ldap< 6.2p2-8.44.amzn1openssh-ldap-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1i686openssh-keycat< 6.2p2-8.44.amzn1openssh-keycat-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux1x86_64openssh< 6.2p2-8.44.amzn1openssh-6.2p2-8.44.amzn1.x86_64.rpm
Amazon Linux1x86_64openssh-keycat< 6.2p2-8.44.amzn1openssh-keycat-6.2p2-8.44.amzn1.x86_64.rpm
Amazon Linux1x86_64pam_ssh_agent_auth< 0.9.3-5.8.44.amzn1pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	1	i686	openssh-server	< 6.2p2-8.44.amzn1	openssh-server-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	i686	openssh-debuginfo	< 6.2p2-8.44.amzn1	openssh-debuginfo-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	i686	openssh-clients	< 6.2p2-8.44.amzn1	openssh-clients-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	i686	pam_ssh_agent_auth	< 0.9.3-5.8.44.amzn1	pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.i686.rpm
Amazon Linux	1	i686	openssh	< 6.2p2-8.44.amzn1	openssh-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	i686	openssh-ldap	< 6.2p2-8.44.amzn1	openssh-ldap-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	i686	openssh-keycat	< 6.2p2-8.44.amzn1	openssh-keycat-6.2p2-8.44.amzn1.i686.rpm
Amazon Linux	1	x86_64	openssh	< 6.2p2-8.44.amzn1	openssh-6.2p2-8.44.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	openssh-keycat	< 6.2p2-8.44.amzn1	openssh-keycat-6.2p2-8.44.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	pam_ssh_agent_auth	< 0.9.3-5.8.44.amzn1	pam_ssh_agent_auth-0.9.3-5.8.44.amzn1.x86_64.rpm