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AUSCERT External Security Bulletin Redistribution
ESB-2016.0231
Security Bulletin: Vulnerabilities in OpenSSH affect IBM
MessageSight (CVE-2016-0777, CVE-2016-0778)
29 January 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM MessageSight
Publisher: IBM
Operating System: Network Appliance
Virtualisation
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0778 CVE-2016-0777
Reference: ESB-2016.0122
ESB-2016.0113
ESB-2016.0112
ESB-2016.0111.2
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21974931
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Security Bulletin: Vulnerabilities in OpenSSH affect IBM MessageSight
(CVE-2016-0777, CVE-2016-0778)
Security Bulletin
Document information
More support for:
IBM MessageSight
Security
Software version:
1.1, 1.2
Operating system(s):
Platform Independent
Reference #:
1974931
Modified date:
2016-01-27
Summary
An information leak flaw and buffer overflow flaw in the way the OpenSSH
client roaming feature was implemented affects IBM MessageSight.
Vulnerability Details
CVEID:
CVE-2016-0777
DESCRIPTION:
OpenSSH could allow a remote attacker to obtain sensitive information,
caused by a client information leak from using the roaming connection
feature. By persuading a victim to connect to a malicious server, an attacker
could exploit this vulnerability to retrieve private cryptographic keys or
other sensitive information.
CVSS Base Score: 6.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/109635
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
CVEID:
CVE-2016-0778
DESCRIPTION:
OpenSSH is vulnerable to a heap-based buffer overflow, caused by improper
bounds checking by the packet_write_wait() and ssh_packet_write_wait() API
functions when two non-default options: a ProxyCommand and either
ForwardAgent or ForwardX11 are used. By persuading a victim to connect to a
malicious server, a remote attacker could overflow a buffer and execute
arbitrary code on the system or cause the application to crash.
CVSS Base Score: 5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/109636
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L)
Affected Products and Versions
IBM MessageSight 1.2.0.3 and below
Remediation/Fixes
Product
VRMF APAR Remediation/First Fix
IBM MessageSight 1.1 IT13410 1.1.0.1-IBM-IMA-IFIT13410
IBM MessageSight 1.2 IT13392 1.2.0.3-IBM-IMA-IFIT13392
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References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
Reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France
Change History
January 27 2015: Original Copy Published
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact
of this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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