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@RISK Newsletter for January 26, 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. 04

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 2017-01-17 - 2017-01-24


TOP VULNERABILITY THIS WEEK: Apple Releases Security Updates for Operating Systems, iCloud, iTunes, and Safari


NOTABLE RECENT SECURITY ISSUES SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

Title: Apple Releases Security Updates for Operating Systems, iCloud, iTunes, and Safari
Description: Apple has released security updates for macOS, iOS, tvOS, and watchOS, as well as iCloud, iTunes, and Safari. Several of the vulnerabilities that were patched are particularly severe, such as two arbitrary code execution flaws manifesting as a buffer overflow and a use-after-free across all operating systems Apple supports. Other vulnerabilities that were fixed include ones in Safari that could exploited if a user navigates to a specifically crafted web page, and a bug that caused the Contacts manager to terminate unexpectedly in iOS.
Reference: https://support.apple.com/en-us/HT201222
Snort SID: Detection pending release of vulnerability information

Title: Cisco Releases Security Update to WebEx Browser Extension
Description: Cisco has released a security advisory for the WebEx Browser Extension to address CVE-2017-3823, a critical security flaw discovered by Tavis Ormandy of Google’s Project Zero. CVE-2017-3823 is a arbitrary code execution flaw that could be exploited if a user navigates to a specifically crafted web page and starts a WebEx session. Note that this vulnerability affects the browser extension for Chrome, Firefox, and Internet Explorer. Cisco has begun to to release software updates that addresses the vulnerability.
Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170124-webex
Snort SID: 41407-41409


INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

Detailed look at patched SMS vulnerabilities in Samsung Galaxy phones
https://www.contextis.com/resources/blog/wap-just-happened-my-samsung-galaxy/

Without Necurs, Locky Struggles
http://blog.talosintel.com/2017/01/locky-struggles.html?f_l=s

Practical Docker for Security Admins
https://remotephone.github.io/lab/homelab/budget/testing/2016/12/20/practical-docker.html

Trump’s attorney general nominee in favor of encryption backdoors
http://www.zdnet.com/article/trumps-attorney-general-nominee-is-in-favor-of-crypto-backdoors/

Spora - the Shortcut Worm that is also a Ransomware
https://blog.gdatasoftware.com/2017/01/29442-spora-worm-and-ransomware

Who is Anna-Senpai, the Mirai Worm Author?
https://krebsonsecurity.com/2017/01/who-is-anna-senpai-the-mirai-worm-author/


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-2016-7200
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-2016-5195
Title: Linux Kernel “MAP_PRIVATE COW” Privilege Escalation Vulnerability
Vendor: Kernel.Org
Description: A race condition vulnerability has been identified in the Linux Kernel. The Linux Kernel’s memory subsystem does not properly handle copy-on-write(COW) breakage of private read-only memory mappings. The vulnerability has been identified as “Dirty Cow.”
CVSS v2 Base Score: 6.6 (AV:L/AC:M/Au:S/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 2017-01-17 - 2017-01-24 COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

SHA 256: ae7327f36a659d01a85d4071a4570458ec03a05a6ce7d2f6d092fb46aff3e739
MD5: fa1f769475516b03881602d0824cae12
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: printerinstallerclientupdater.exe
Claimed Product: Printer Client Updater
Detection Name: W32.AE7327F36A-95.SBX.TG

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: 8d5259dd99cc605b19cd5a176c46503f29c7a61107013f5f97180a1fc84d001e
MD5: 7bf7a625c382568da910e86b7b332da1
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: information.doc
Claimed Product: N/A
Detection Name: W32.8D5259DD99-95.SBX.TG

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: d3dbe14033ad25a5e4ffe1e2b559e53ee1d1799eb54eedbd7a689d6a88fd7137
MD5: f4be84934734b03d7f11e22b4de7fd0a
VirusTotal: Additional information from antivirus scan analysis
Typical Filename: Danielic
Claimed Product: (unknown)
Detection Name: Auto.683062.192247.in02


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