@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 23, 2017=============================================================
@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 12
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 2017-03-14 - 2017-03-21
============================================================TOP VULNERABILITY THIS WEEK: Cisco Releases Critical Security Advisory For IOS and IOS XE 0-day Found in "Vault 7" Info Dump
******************** Sponsored By SANS ******************Threat Hunting and Incident Response Summit - 2017: SANS, along with the Threat Hunting Summit's founding partner, Carbon Black is excited to provide attendees the opportunity to collaborate with and learn from incident response and detection experts who are uncovering and stopping the most recent, sophisticated, and dangerous attacks against organizations. Register: http://www.sans.org/info/193507
============================================================ 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 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: Forensic State Analysis: A New Approach to Threat Hunting - with Alyssa Torres. Register: http://www.sans.org/info/193512
2) The Data Breach Summit Call for Presentations is open! Submit your talk and join us in Chicago: http://www.sans.org/info/193517
3) Red Hat can help container users secure their apps and achieve FISMA compliance. Learn more: http://www.sans.org/info/193522
============================================================NOTABLE RECENT SECURITY ISSUES
SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Cisco Releases Critical Security Advisory For IOS and IOS XE 0-day Found in "Vault 7" Info Dump Description: Cisco has released a critical security advisory in response to CVE-2017-3881, a 0-day vulnerability that was identified in the "Vault 7" information dump. CVE-2017-3881 is a remote code execution vulnerability that manifests in the Cisco Cluster Management Protocol (CMP) processing functionality of IOS and IOS XE. A remote, unauthenticated attacker who transmits malformed CMP-specific Telnet options to a vulnerable device could exploit this flaw and execute arbitrary code with elevated privileges. Note that the vulnerable device must be configured to accept Telnet connections. Cisco is currently developing software updates that will address this vulnerability. Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170317-cmp Snort SID: 41909-41910
Title: Various JSON Library Patched to Address Invalid Curve Crypto Attack Description: Several JSON libraries have been patched to address a flaw in the implementation of JSON Web Encryption (JWE). Specifically, libraries that implement JWE for encryption with Key Agreement with Elliptic Curve Diffie-Hellman Ephemeral Static (ECDH-ES) were found to be vulnerable to an Invalid Curve Attack. This means that recovery of the private key could be possible. In response to this flaw being identified, go-jose, jose2go, Nimbus JOSE+WT, node-jose, and jose4 JSON libraries were all patched. Reference: http://blog.intoth
============================================================INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
GitHub Enterprise Remote Code Execution http://exablue.de/blog/2017-03-15-github-enterprise-remote-code-execution.html
VM Escape Earns Hackers $105K at Pwn2Own https://threatpost.com/vm-escape-earns-hackers-105k-at-pwn2own/124397/
Samsung Leaking Customer Information https://hackernoon.com/samsung-leaking-customer-information-9b7e2dcb006d?gi=18e80d0d0e11
How Common and How Reliable Are Randomized Mac Addresses https://packetmozart.com/2017/03/21/how-common-and-how-reliable-are-randomized-mac-addresses/
0-day or Feature? Privilege Escalation/Session Hijacking Using RDP in Windows http://www.korznikov.com/2017/03/0-day-or-feature-privilege-escalation.html
LastPass: websiteConnector.js content script allows proxying internal RPC commands https://bugs.chromium.org/p/project-zero/issues/detail?id=1209
=========================================================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-2017-5638 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-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 2016-03-14 - 2017-03-21: 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: 8897f94710f3ca65af0e52f6e2b76e6319dd5fb0dd6ad0968f8acc0d25ee783a MD5: cc9e1075db0645f1032f8c4b4412deba VirusTotal: https://www.virustotal.com/file/8897f94710f3ca65af0e52f6e2b76e6319dd5fb0dd6ad0968f8acc0d25ee783a/analysis/#additional-info Typical Filename: winflnax.exe Claimed Product: (none) Detection Name: W32.8897F94710-95.SBX.TG
SHA 256: f4ae1a3d610a57547f014215a5d7aaed8572cd36aa77a9567c183f11430a6b55 MD5: 51e63633487f9180ec8031980684bf86 VirusTotal: https://www.virustotal.com/file/f4ae1a3d610a57547f014215a5d7aaed8572cd36aa77a9567c183f11430a6b55/analysis/#additional-info Typical Filename: winfdttje.exe Claimed Product: (none) Detection Name: W32.F4AE1A3D61-95.SBX.TG
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: aa44a8dd4563c03ac65650622cb3af81f52e8ea2e1df663f68e0061b8bcac3ce MD5: 8dbdb1775921915dd66c68d430114e6f VirusTotal: https://www.virustotal.com/file/aa44a8dd4563c03ac65650622cb3af81f52e8ea2e1df663f68e0061b8bcac3ce/analysis/#additional-info Typical Filename: ytwws.exe Claimed Product: (none) Detection Name: W32.Auto:aa44a8.in03.Talos
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