@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.
May 2, 2017=============================================================
@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 18
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 2017-04-25 - 2017-05-02
============================================================TOP VULNERABILITY THIS WEEK: Intel Addresses Critical Privilege Escalation Flaw in AMT, ISM, and Small Business Technology Platforms
******************** Sponsored By VMRay ********************Defeat evasive malware and achieve full, accurate analysis results. The VMRay Research Team provides a comprehensive look at the 3 key approaches threat actors use to evade sandbox analysis. By downloading this whitepaper you'll learn how malware: evades the analysis environment, uses event-based triggers, and exploits sandbox weaknesses. http://www.sans.org/info/194610
============================================================TRAINING UPDATE
-- 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
-- Digital Forensics & Incident Response Summit & Training | Austin, TX | June 22-29 | Two days of in-depth Summit talks, 9 SANS courses, DFIR NetWars, Night Out in Austin!, and @Night talks! http://www.sans.org/u/ryX
-- 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
-- SANSFIRE 2017 | Washington, DC | July 22-29 | http://www.sans.org/u/r4U
-- SANS Network Security | Las Vegas, NV | September 10-17 | http://www.sans.org/u/rIS-- 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!
-- SANS Online Training: Special Offer! Register by May 10 and receive a new iPad, Samsung Galaxy Tab A or take $350 off your OnDemand 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) Discover how Cloudflare is able to support DNSSEC at its scale with special consideration to key management, new DNSSEC algorithm types and signing on the fly. http://www.sans.org/info/194615
2) Don't Miss: "The Promise and Pitfalls of Security Testing Today" Register: http://www.sans.org/info/194620
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/194625
============================================================NOTABLE RECENT SECURITY ISSUES SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Intel Addresses Critical Privilege Escalation Flaw in AMT, ISM, and Small Business Technology Platforms Description: Intel has released a security advisory for CVE-2017-5689, a privilege escalation vulnerability in Active Management Technology (AMT), Standard Manageability (ISM), and Small Business Technology platforms. CVE-2017-5689 manifests in way that could allow an unauthenticated attacker to "gain control of the manageability features provided" by the affected platforms. Intel notes that firmware versions 6.x, 7.x, 8.x 9.x, 10.x, 11.0, 11.5, and 11.6 are affected. However, Intel-based consumer PCs are are unaffected. Intel has released a software update that addresses this flaw. Reference: https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00075&languageid=en-fr Snort SID: Detection pending release of vulnerability information
Title: Android Releases Month Security Bulletin Description: Android has released its monthly security bulletin addressing vulnerabilities that have been identified in the open source mobile operating system. This month's release addresses 118 vulnerabilities in various components in the operating system such as Mediaserver, MediaTek touchscreen driver, kernel sound subsystem, and more. As with previous bulletins, Android has elected to release two patch levels to allow device manufacturers the flexibility to fix a subset of the vulnerabilities more quickly. Security updates for Google Pixel and Nexus devices have been released over-the-air. Device manufactures should be releasing updates in the future. Reference: https://source.android.com/security/bulletin/2017-05-01 Snort SID: Detection pending release of vulnerability information
============================================================INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
Shodan can now find malware command and control servers http://www.zdnet.com/article/shodan-can-now-find-malware-command-and-control-servers/
BSidesCharm 2017 Videos http://www.irongeek.com/i.php?page=videos/bsidescharm2017/mainlist
Yahoo Bug Bounty: Chaining 3 Minor Issues To Takeover Flickr Accounts http://blog.mish.re/index.php/2017/04/29/yahoo-bug-bounty-chaining-3-minor-issues-to-takeover-flickr-accounts/
nomx: The world's most secure communications protocol (or not) https://scotthelme.co.uk/nomx-the-worlds-most-secure-communications-protocol/
Blind Trust in Email Could Cost You Your Home https://krebsonsecurity.com/2017/04/blind-trust-in-email-could-cost-you-your-home/?
Apple Revokes Certificate Used By OSX/Dok Malware https://threatpost.com/apple-revokes-certificate-used-by-osxdok-malware/125322/
Disarming Control Flow Guard Using Advanced Code Reuse Attacks https://www.endgame.com/blog/disarming-control-flow-guard-using-advanced-code-reuse-attacks
=========================================================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-2017-3881 Title: Cisco IOS and IOS XE Software Cluster Management Protocol Remote Code Execution Vulnerability Vendor: Cisco Description: A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: (1) the failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device; and (2) the incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. This affects Catalyst switches, Embedded Service 2020 switches, Enhanced Layer 2 EtherSwitch Service Module, Enhanced Layer 2/3 EtherSwitch Service Module, Gigabit Ethernet Switch Module (CGESM) for HP, IE Industrial Ethernet switches, ME 4924-10GE switch, RF Gateway 10, and SM-X Layer 2/3 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893. CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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)
=========================================================MOST PREVALENT MALWARE FILES 2017-04-25 - 2017-05-02: COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
SHA 256: ae7327f36a659d01a85d4071a4570458ec03a05a6ce7d2f6d092fb46aff3e739 MD5: fa1f769475516b03881602d0824cae12 VirusTotal: https://www.virustotal.com/file/ae7327f36a659d01a85d4071a4570458ec03a05a6ce7d2f6d092fb46aff3e739/analysis/#additional-info Typical Filename: printerinstallerclientupdater.exe Claimed Product: Printer Updater Client Detection Name: W32.AE7327F36A-95.SBX.TG
SHA 256: c19fd401e01738676c11c84c5c3d4c0d33761d2bdd5babbb499696b6a24c10e4 MD5: 42f4132977a5f70289059e4935ac3f0c VirusTotal: https://www.virustotal.com/file/c19fd401e01738676c11c84c5c3d4c0d33761d2bdd5babbb499696b6a24c10e4/analysis/#additional-info Typical Filename: CynetEPS.exe Claimed Product: Cynet Scanner Detection Name: W32.Ransom:Gen.20f1.1201
SHA 256: bcffda040c93b743bca1a67128ec1f60595dc0b14655afd7949b6c779e0e997f MD5: 2dbf779808d2ec3f5121891be9f4b1cf VirusTotal: https://www.virustotal.com/file/bcffda040c93b743bca1a67128ec1f60595dc0b14655afd7949b6c779e0e997f/analysis/#additional-info Typical Filename: helperamc Claimed Product: Advanced Mac Cleaner Detection Name: OSX.Variant:AMCZ.19if.1201
SHA 256: 38234dc3d414d6e69730026d8f645e8ba8aec3d2ce87bc558cf861c5853ae031 MD5: e09a590f5e3c77026ca309c2d76cfe75 VirusTotal: https://www.virustotal.com/file/38234dc3d414d6e69730026d8f645e8ba8aec3d2ce87bc558cf861c5853ae031/analysis/#additional-info Typical Filename: img4592.zip Claimed Product: N/A Detection Name: W32.Auto:38234d.TG.VRT
SHA 256: d4e5d87f58466af4c4bfce09422e2dc8078bddbbc55645923a51891e1b10c661 MD5: db6d353b086511f0b0d2d80579d8ea7bv VirusTotal: https://www.virustotal.com/file/d4e5d87f58466af4c4bfce09422e2dc8078bddbbc55645923a51891e1b10c661/analysis/#additional-info Typical Filename: order_shop_359454.zip Claimed Product: N/A Detection Name: W32.Auto:d4e5d87f58.in05.Talos
=============================================================(c) 2017. All rights reserved. The information contained in this newsletter, including any external links, is provided "AS IS," with no express or implied warranty, for informational purposes only.
Please feel free to share this with interested parties via email, but no posting is allowed on web sites. For a free subscription, (and for free posters) or to update a current subscription, visit https://www.sans.org/account
SANS Institute, 11200 Rockville Pike, Suite 200, North Bethesda, MD 20852
