Amazon Linux AMI update for openssh

Published: 2016-01-18

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2016-0777 CVE-2016-0778
CWE-ID	CWE-284
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU718

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-0777

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to disclose potentially sensitive information on the target system.
The weakness exists due to access control flaw that allows a malicious user to disclose important data.
Successful exploitation of the vulnerability leads to potentially sensitive information disclosure.

Mitigation

Update the affected packages.

i686:
    openssh-server-6.6.1p1-23.59.amzn1.i686
    openssh-6.6.1p1-23.59.amzn1.i686
    openssh-ldap-6.6.1p1-23.59.amzn1.i686
    pam_ssh_agent_auth-0.9.3-9.23.59.amzn1.i686
    openssh-debuginfo-6.6.1p1-23.59.amzn1.i686
    openssh-clients-6.6.1p1-23.59.amzn1.i686
    openssh-keycat-6.6.1p1-23.59.amzn1.i686

src:
    openssh-6.6.1p1-23.59.amzn1.src

x86_64:
    pam_ssh_agent_auth-0.9.3-9.23.59.amzn1.x86_64
    openssh-keycat-6.6.1p1-23.59.amzn1.x86_64
    openssh-server-6.6.1p1-23.59.amzn1.x86_64
    openssh-debuginfo-6.6.1p1-23.59.amzn1.x86_64
    openssh-clients-6.6.1p1-23.59.amzn1.x86_64
    openssh-ldap-6.6.1p1-23.59.amzn1.x86_64
    openssh-6.6.1p1-23.59.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2016-638.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Denial of service

EUVDB-ID: #VU719

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-0778