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@RISK Newsletter for February 16, 2017 The Consensus Security Vulnerability Alert

This is a weekly newsletter that provides in-depth analysis of the latest vulnerabilities with straightforward remediation advice. Qualys supplies a large part of the newly-discovered vulnerability content used in this newsletter.


@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 07

Providing a reliable, weekly summary of newly discovered attack vectors, vulnerabilities with active exploits, and explanations of how recent attacks worked.

Archived issues may be found at https://www.qualys.com/research/sans-at-risk/


CONTENTS:

NOTABLE RECENT SECURITY ISSUES
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 2017-02-07 - 2017-02-14


TOP VULNERABILITY THIS WEEK: ISC Releases Security Advisory for BIND To Resolve Denial of Service Attack


NOTABLE RECENT SECURITY ISSUES

SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

Title: ISC Releases Security Advisory for BIND To Resolve Denial of Service Attack
Description: ISC has released a security advisory for BIND to address CVE-2017-3135, a denial of service vulnerability. CVE-2017-3135 manifests under certain conditions when both DNS64 and RPZ are used to rewrite query responses. In some instances, query processing “can resume in an inconsistent state” and result in a assertion failure or NULL pointer dereference. Workarounds to avoid this vulnerability are possible, but ISC recommends BIND should be upgraded as updated that address this vulnerability have been made available.
Reference: https://kb.isc.org/article/AA-01453
Snort SID: Detection pending release of vulnerability information

Title: Adobe Releases Security Bulletins for Flash Player, Digital Editions, and Campaign
Description: Adobe has released three security bulletins for Flash Player, Digital Editions, and Campaign. In total, 24 vulnerabilities were resolved across the three bulletins with 13 Flash Player flaws fixed, 9 Digital Editions flaws fixed, and 2 Campaign flaws fixed. The Flash Player bulletin notes that all 13 flaws could possibly lead to remote code execution with all them being memory corruptions, heap buffer overflows, use-after-frees, integer overflows, and type confusion flaws.
Reference: - https://helpx.adobe.com/security/products/flash-player/apsb17-04.html

Snort SID: 41603-41604, 41611-41624, 41627-41632


INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

New Attack, Old Tricks - Macro-based Malware Observed on macOS
https://objective-see.com/blog/blog_0x17.html

How to build a 8 GPU password cracker
https://www.shellntel.com/blog/2017/2/8/how-to-build-a-8-gpu-password-cracker

Go RAT, Go! AthenaGo points “TorWords” Portugal
http://blog.talosintel.com/2017/02/athena-go.html?f_l=s

USB Key Cleaner: CIRCLean
https://n0where.net/usb-key-cleaner-circlean/?

U.S. House of Representatives Passes Long-Sought Email Privacy Bill
https://krebsonsecurity.com/2017/02/house-passes-long-sought-email-privacy-bill/?

Microsoft delays its usual Patch Tuesday updates
http://www.zdnet.com/article/microsoft-delays-its-usual-patch-tuesday-updates/


RECENT VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE COMPILED BY THE QUALYS VULNERABILITY RESEARCH TEAM

This is a list of recent vulnerabilities for which exploits are available. System administrators can use this list to help in prioritization of their remediation activities. The Qualys Vulnerability Research Team compiles this information based on various exploit frameworks, exploit databases, exploit kits and monitoring of internet activity.

ID: CVE-2016-9244
Title: F5 BIG-IP SSL Information Disclosure Vulnerability
Vendor: F5
Description: A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may leak up to 31 bytes of uninitialized memory. A remote attacker may exploit this vulnerability to obtain Secure Sockets Layer (SSL) session IDs from other sessions. It is possible that other data from uninitialized memory may be returned as well.
CVSS v2 Base Score: 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N)

ID: CVE-2017-3823 Title: Cisco WebEx Google Chrome Extension Remote Code Execution Vulnerability Vendor: Cisco Description: An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Container before 106 on Mozilla Firefox, the GpcContainer Class ActiveX control plugin before 10031.6.2017.0126 on Internet Explorer, and the Download Manager ActiveX control plugin before 2.1.0.10 on Internet Explorer. A vulnerability in these Cisco WebEx browser extensions could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server and Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center) when they are running on Microsoft Windows. The vulnerability is a design defect in an application programing interface (API) response parser within the extension. An attacker that can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C) ID: CVE-2016-7200 Title: Microsoft Edge Scripting Engine Memory Corruption Code Execution Vulnerability Vendor: Microsoft Description: The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka “Scripting Engine Memory Corruption Vulnerability,” a different vulnerability than CVE-2016-7201, CVE-2016-7202, CVE-2016-7203, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243. CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)

ID: CVE-2016-7892
Title: Adobe Flash Player Use-After-Free Code Execution Vulnerability
Vendor: Adobe
Description: Remote exploitation of a use-after-free vulnerability in Adobe’s Flash Player could allow attackers to execute arbitrary code. Adobe is aware of a report that an exploit for CVE-2016-7892 exists in the wild, and is being used in limited targeted attacks.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

ID: CVE-2016-6366
Title: Cisco Adaptive Security Appliance SNMP Buffer Overflow Code Execution Vulnerability
Vendor: Cisco
Description: Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.
CVSS v2 Base Score: 8.5 (AV:N/AC:M/Au:S/C:C/I:C/A:C)

ID: CVE-2016-1017
Title: Adobe Flash Player “AS2 LoadVars” Use-after-free Code Execution Vulnerability (APSA16-10)
Vendor: Adobe
Description: Use-after-free vulnerability in the LoadVars.decode function in Adobe Flash Player before 18.0.0.343 and 19.x through 21.x before 21.0.0.213 on Windows and OS X and before 11.2.202.616 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1011, CVE-2016-1013, CVE-2016-1016, and CVE-2016-1031.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

ID: CVE-2016-0189
Title: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
Vendor: Microsoft
Description: The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka “Scripting Engine Memory Corruption Vulnerability,” a different vulnerability than CVE-2016-0187.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)


MOST PREVALENT MALWARE FILES 2017-02-07 - 2017-02-14 COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

SHA 256: bcffda040c93b743bca1a67128ec1f60595dc0b14655afd7949b6c779e0e997f
MD5: 2dbf779808d2ec3f5121891be9f4b1cf
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: helperamc
Claimed Product: Advanced Mac Cleaner
Detection Name: OSX.Variant:AMCZ.19if.1201

SHA 256: 2a3c6020418ba65020feffc50d30ad77aa6f87bb97e831f9d19585c5c0fbf439
MD5: 220a227048a34c7145aa3af9b29a39c5
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: mfon.zip
Claimed Product: Mac File Opener
Detection Name: W32.Auto.2a3c60.201455.in01

SHA 256: 280c48828f845c55a14a2930cf2105f65a220a471c0c71515c69d77aabfed054
MD5: dd0b29dbd6f54d217e75739520e090a6
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: Delivery-Details.zip
Claimed Product: N/A
Detection Name: W32.Auto:280c48828f.in05.Talos

SHA 256: e3a1b642e1e097ad51aaf00ac04f95a542ca532d1527897543dd46b4c4a8aa8a
MD5: 96233bf468ffa3039764e39dc2e4aab4
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: \0x9500.\0x552E.\0x4E3B.\0x7BA1\0x8BE5\0x5982\0x4F55\0x5B9A\0x4F4D.docx
Claimed Product: N/A
Detection Name: DOCX.Auto:e3a1b642e1.in05.Talos

SHA 256: 09e8114c3198af5e854ca0cf863d6651313c392bbf89761cf39e9cc312a40e24
MD5: 3f9a39ce158010d21ac983311fa2e41f
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: 32957.doc
Claimed Product: N/A
Detection Name: W32.09E8114C31-100.SBX.TG


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