@RISK provides a reliable weekly summary of (1) newly discovered attack vectors, (2) vulnerabilities with active new exploits, (3) insightful explanations of how recent attacks worked, and other valuable data
A key purpose of the @RISK is to provide the data that will ensure that the 20 Critical Controls (the US and UK benchmark for effective protection of networked systems) continue to be the most effective defenses for all known attack vectors. But since it is also valuable for security practitioners, SANS is making it available to the 145,000 security practitioners who have completed SANS security training and others at their organizations who hope to stay current with the offensive methods in use.
March 30, 2017=============================================================
@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 13
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 http://www.sans.org/newsletters/at-risk
=============================================================CONTENTS:
NOTABLE RECENT SECURITY ISSUES
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 2017-03-21 - 2017-03-28
============================================================TOP VULNERABILITY THIS WEEK: Apple Releases Security Updates for iOS, macOS, tvOS, watchOS, and more
******************** Sponsored By AGARI ******************BEC "Wake-up Call": 2 Companies Lose $100M to Email Scam
The FBI just arrested a Lithuanian man for stealing $100M from two U.S. companies by impersonating their Asian computer hardware supplier. This sophisticated email attack easily evaded Secure Email Gateways. Learn the techniques used in the attack, cyber kill chain, & how to avoid becoming the next $100M victim. http://www.sans.org/info/193842
============================================================ TRAINING UPDATE-- SANS 2017 | Orlando, FL | April 7-14| http://www.sans.org/u/oWz
-- Threat Hunting & IR Summit & Training 2017 | New Orleans, LA | April 18-25, 2017 | Will you be the hunter or the prey? Two days of in-depth Summit talks, 7 world-class SANS courses, DFIR NetWars, and exclusive networking opportunities! http://www.sans.org/u/pSt
-- SANS Baltimore Spring 2017 | April 24-29 | http://www.sans.org/u/pSy
-- SANS Automotive Cybersecurity Summit & Training | Detroit, MI | May 1-8, 2017 | Cybersecurity in the plant and on the road. Two days of in-depth Summit talks, four world-class SANS courses, and community-building opportunities. http://www.sans.org/u/qo0
-- SANS Security West 2017 | San Diego, CA | May 9-18 | http://www.sans.org/u/qO8
-- SANS San Francisco Summer 2017 | June 5-10 | http://www.sans.org/u/qE8
-- SANS Security Operations Center Summit & Training | Washington, DC | June 5-12 | Build more effective security operations. Two days of in-depth Summit talks, 5 SANS courses, exclusive networking opportunities, & more! http://www.sans.org/u/qof
-- SANS Secure Europe 2017 | Amsterdam, NL | June 12-20 | http://www.sans.org/u/qqA
-- SANS Cyber Defence Canberra 2017 | June 26-July 8 | http://www.sans.org/u/qqF
-- SANS London July 2017 | July 3-8 | http://www.sans.org/u/pSD
-- SANS Cyber Defence Singapore | July 10-15 | http://www.sans.org/u/pSI
-- Can't travel? SANS offers LIVE online instruction. Day (Simulcast - http://www.sans.org/u/WK) and Evening (vLive - http://www.sans.org/u/WZ) courses available!
-- Special Offer! Register by March 15 and receive an iPad Air 2, Samsung Galaxy Tab S2 or $350 Off your On Demand or vLive course!
-- OnDemand http://www.sans.org/u/pS9
-- vLive http://www.sans.org/u/pSj
-- Multi-week Live SANS training Mentor - http://www.sans.org/u/X9 Contact mentor@sans.org
-- Looking for training in your own community? Community - http://www.sans.org/u/Xo
-- SANS OnDemand lets you train anytime, anywhere with four months of online access to your course. Learn more: http://www.sans.org/u/XD
Plus Brussels, San Francisco, Arlington, and Dubai all in the next 90 days. For a list of all upcoming events, on-line and live: http://www.sans.org/u/XN
********************** Sponsored Links: ********************1) Don't Miss: "How to Achieve Visibility, Security and Integrity for Forward Looking Resilience" Register: http://www.sans.org/info/193847
2) "Increasing Software Security Up and Down the Supply Chain" with John Pescatore. Learn More: http://www.sans.org/info/193852
3) Take the SANS 2017 Survey on Insider Threats and register for a chance to win a $400 Amazon gift card: http://www.sans.org/info/193857
============================================================NOTABLE RECENT SECURITY ISSUES
SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Apple Releases Security Updates for iOS, macOS, tvOS, watchOS, and more Description: Apple has release a security updates for a number of supported products such as iOS, macOS, tvOS, watchOS, iWork, Safari, and macOS Server. These updates addresses numerous vulnerabilities, several of which are severe. One particular vulnerability that should be noted is CVE-2017-2485, a remote code execution vulnerability manifesting as a input validation error when parsing X.509 certificates. Exploitation of this vulnerability is possible if a user visits a website that serves the client a malicious certificate. Patches for CVE-2017-2485 and other flaws are available for download and installation. Reference: https://support.apple.com/en-us/HT201222 Snort SID: 41999; Additional detection pending release of vulnerability information
Title: LastPass Releases Security Updates Addressing 3 Vulnerabilities Description: LastPass has released security updates to address 3 vulnerabilities within its password manager browser extensions that were responsibly disclosed by Tavis Ormandy of Google's Project Zero. One of the vulnerabilities is a password theft flaw that affects LastPass 3.3.2 for Firefox. The second is a remote code execution flaw via proxying internal RPC commands in LastPass. The third vulnerability is a cross-site scripting bug in the LastPass extension for Firefox. All three vulnerabilities have been patched and LastPass has pushed updated browser extensions for Firefox, Chrome and other browsers. Reference:
- https://blog.lastpass.com/2017/03/important-security-updates-for-our-users.html
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1188
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1209
Title: Cisco Releases Semi-annual Security Updates for IOS and IOS XE Description: Cisco has released its semi-annual security advisory bundle for IOS and IOS XE. In total, five vulnerabilities were addressed with four of them being denial of service flaws and one being an http command injection vulnerability. The denial of service flaws manifest in various parts such as DHCP, L2TP, Zero Touch Provisioning, and the http interface for IOS XE. The http command injection vulnerability carries with it a "high" severity rating, but is only exploitable if an attacker is authenticated via the http interface. Software updates that address these flaws are available. Reference: https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-60851 Snort SID: 42060-42061, 42069-42071
============================================================INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
Microsoft Word File Spreads Malware Targeting Both Apple Mac OS X and Microsoft Windows http://blog.fortinet.com/2017/03/22/microsoft-word-file-spreads-malware-targeting-both-apple-mac-os-x-and-microsoft-windows
Google to gradually distrust Symantec's CA for mis-issuing 30,000 httpS certs https://arstechnica.com/security/2017/03/google-takes-symantec-to-the-woodshed-for-mis-issuing-30000-https-certs/
PoC || GTFO 0x14 Released! https://www.alchemistowl.org/pocorgtfo/pocorgtfo14.pdf
Detecting and mitigating elevation-of-privilege exploit for CVE-2017-0005 https://blogs.technet.microsoft.com/mmpc/2017/03/27/detecting-and-mitigating-elevation-of-privilege-exploit-for-cve-2017-0005/
eBay Asks Users to Downgrade Security https://krebsonsecurity.com/2017/03/ebay-asks-users-to-downgrade-security
=========================================================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-2017-7269 Title: Microsoft IIS 6.0 ScStoragePathFromUrl Buffer Overflow Vulnerability Vendor: Microsoft Description: Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long header beginning with "If: http://" in a PROPFIND request, as exploited in the wild in July or August 2016. CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
ID: CVE-2017-5638 Title: Apache Struts2 Input Validation Code Execution Vulnerability Vendor: Apache Description: The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 mishandles file upload, which allows remote attackers to execute arbitrary commands via a #cmd= string in a crafted Content-Type http header, as exploited in the wild in March 2017. CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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 2016-03-21 - 2017-03-28: COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
SHA 256: 24a4cffbe3b0c9394fa95cd2e8437210cd00b940f29884265134d0b53387e4c9 MD5: 335889e42e25203c77e9553e3987b6ae VirusTotal: https://www.virustotal.com/file/24a4cffbe3b0c9394fa95cd2e8437210cd00b940f29884265134d0b53387e4c9/analysis/#additional-info Typical Filename: helperamc.zip Claimed Product: Advanced Mac Cleaner Detection Name: W32.Trojan.NM
SHA 256: e8f80d0b97ecb8ccb06741e99e04eb5c843c0d76c6ba40047b917033f0510386 MD5: 68047ef39c0958335c5ae9c5148c044a VirusTotal: https://www.virustotal.com/file/e8f80d0b97ecb8ccb06741e99e04eb5c843c0d76c6ba40047b917033f0510386/analysis/#additional-info Typical Filename: mfon.zip Claimed Product: Mac File Opener Detection Name: W32.Trojan.NM
SHA 256: 2e373aabfe36bc130c9213def9a5eabec4b2d13e3e2d940a1eeed7ec35cf8c27 MD5: 05a655697861ad4fbd4f86d5468fd700 VirusTotal: https://www.virustotal.com/file/2e373aabfe36bc130c9213def9a5eabec4b2d13e3e2d940a1eeed7ec35cf8c27/analysis/#additional-info Typical Filename: ProntoApp Claimed Product: ProntoApp Detection Name: OSX.Variant.20df.1201
SHA 256: ad3e0cc9ffa729abf7a19fc7d42a6c8855e05b7a15fec6db2f6a46fae0563ded MD5: 2e471eefa8680d901ac459080b3d9996 VirusTotal: https://www.virustotal.com/file/ad3e0cc9ffa729abf7a19fc7d42a6c8855e05b7a15fec6db2f6a46fae0563ded/analysis/#additional-info Typical Filename: winjilwjp.exe Claimed Product: (none) Detection Name: W32.Malware:Gen.20eu.1201
SHA 256: 43a28be6d2258245a4cd1ba5d1e8c28b86ed388b852c5d2954434cd3de4d6080 MD5: 2a9e2f5a8dccdaa86fb33838d1b174a7 VirusTotal: https://www.virustotal.com/file/43a28be6d2258245a4cd1ba5d1e8c28b86ed388b852c5d2954434cd3de4d6080/analysis/#additional-info Typical Filename: t8MedInt.exe Claimed Product: Mindspark Toolbar Detection Name: W32.Adware.19nm.1201
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