Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT Security Bulletin
ASB-2017.0218
McAfee Security Bulletin - OpenSSL update for
vulnerabilities CVE-2017-3735 and CVE-2017-3736
22 December 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: McAfee Products
Operating System: Virtualisation
Network Appliance
Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2017-3736 CVE-2017-3735
Member content until: Sunday, January 21 2018
Reference: ASB-2017.0202
ESB-2017.3218
ESB-2017.3217
ESB-2017.3215.3
ESB-2017.3120
ESB-2017.3100
OVERVIEW
It has been discovered that several well known OpenSSL
vulnerabilities affect numerous McAfee products. [1]
The vendor advises the following product's status with respect to the
vulnerabilities:
"Vulnerable and Updated
DXL Broker 4.0.0
NSP Sensor 8.x, 9.x
SIEM 9.6.x, 10.x
TIE Server 1.x, 2.x
Vulnerable and Not Yet Updated
Advanced Threat Defense (ATD) 3.6, 3.8, 3.10, 4.0
McAfee Active Response (MAR) 2.x
McAfee Email Gateway (MEG) 7.x
McAfee Web Gateway (MWG) 7.7.2.x, 7.8.0.x
Network Data Loss Prevention (NDLP) 9.3.x
SaaS Email Protection and Continuity (SaaS Email)
VirusScan Enterprise for Linux (VSEL) 1.x, 2.x
Not Vulnerable
ePolicy Orchestrator (ePO) 5.x
VirusScan Enterprise (VSE) for Windows 8.8"[1]
IMPACT
The vendor has provided the following details regarding the
vulnerabilities:
"CVE-2017-3735 While parsing an IPAddressFamily extension in an
X.509 certificate, it is possible to do a one-byte overread. This
would result in an incorrect text display of the certificate. This
bug has been present since 2006 and is present in all versions of
OpenSSL before 1.0.2m and 1.1.0g.
https://nvd.nist.gov/vuln/detail/CVE-2017-3735
CVE-2017-3736 There is a carry propagating bug in the x86_64
Montgomery squaring procedure in OpenSSL before 1.0.2m and 1.1.0
before 1.1.0g. No EC algorithms are affected. Analysis suggests that
attacks against RSA and DSA as a result of this defect would be very
difficult to perform and are not believed likely. Attacks against DH
are considered just feasible (although very difficult) because most
of the work necessary to deduce information about a private key may
be performed offline. The amount of resources required for such an
attack would be very significant and likely only accessible to a
limited number of attackers. An attacker would additionally need
online access to an unpatched system using the target private key in
a scenario with persistent DH parameters and a private key that is
shared between multiple clients. This only affects processors that
support the BMI1, BMI2, and ADX extensions like Intel Broadwell (5th
generation) and later or AMD Ryzen.
https://nvd.nist.gov/vuln/detail/CVE-2017-3736
Workaround TIE Server:
CVE-2017-3736: You can restrict the allowed cipher suites by
customizing the ssl_ciphers property in
/data/tieserver_pg/postgresql.conf. Then, run these commands to
apply the changes: # service tieserver stop # service tieserver
start
Follow the steps in KB90067 to upgrade to the OpenSSL 1.0.2m library
in TIE Server.
Mitigations None. "[1]
MITIGATION
The vendor recommends users of known vulnerable McAfee products to
review their product and apply any patches as appropriate:
"Go to the McAfee Downloads site and download the applicable product
patch/hotfix file". [1]
REFERENCES
[1] McAfee Security Bulletin - OpenSSL update for vulnerabilities
CVE-2017-3735 and CVE-2017-3736
https://kc.mcafee.com/corporate/index?page=content&id=SB10220
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=cwVQ
-----END PGP SIGNATURE-----