@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.
August 10, 2017=============================================================
@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 32
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 2017-08-01 - 2017-08-08
============================================================TOP VULNERABILITY THIS WEEK: Microsoft Releases Out-of-Band Patches to Address for Outlook
******************** Sponsored By Barkly ********************Ransomware continues to experience record growth in 2017. Traditional solutions aren't enough and can't keep up with hundreds of thousands of new malware versions created daily. File-less attacks and exploits are now the most common vectors for successful ransomware attacks and most companies aren't protected.
Learn the three strategies Avidia Bank implemented to shut out today's sophisticated threats and how you can apply them to protect your own organization: http://www.sans.org/info/197355
TRAINING UPDATE
-- SANS Network Security | Las Vegas, NV | September 10-17 | http://www.sans.org/u/rIS
-- SANS Virginia Beach 2017 | August 21-September 1 | http://www.sans.org/u/ukE
-- SANS London September 2017 | September 25-30 | http://www.sans.org/u/sEx
-- SANS Baltimore Fall 2017 | September 25-30 | http://www.sans.org/u/uCD
-- SANS Data Breach Summit & Training 2017 | Chicago, IL | September 25-October 2 | http://www.sans.org/u/tIq
-- SANS October Singapore 2017 | October 9-28 | http://www.sans.org/u/tIA
-- SANS Secure DevOps Summit & Training | Denver, CO | October 10-17 | http://www.sans.org/u/utw
-- SANS Brussels Autumn 2017 | October 16-21 | http://www.sans.org/u/twY
-- SANS Tokyo Autumn 2017 | October 16-28 | http://www.sans.org/u/thk
-- SANS OnDemand and vLive Training | Online Training Special: Get an iPad, Samsung Galaxy Tab A, or take $250 Off with OnDemand or vLive Training - ends August 16. Top-tier training without the travel. http://www.sans.org/u/uCI
-- Can't travel? SANS offers online instruction for maximum flexibility
-- Live Daytime training with Simulcast - http://www.sans.org/u/WK
-- Evening training 2x per week for 6 weeks with vLive - http://www.sans.org/u/WZ
-- Anywhere, Anytime access for 4 months with OnDemand format - http://www.sans.org/u/rEw
-- 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
-- Plus San Francisco, Adelaide, Dublin, Baltimore, and Singapore all in the next 90 days.
For a list of all upcoming events, on-line and live: http://www.sans.org/u/XN
1) The cost of Business Email Compromise is impacting employees, business partners and customers of organizations around the world. Register: http://www.sans.org/info/197360
2) Register to learn how to put some power into your network security so that you can effectively detect, hunt and prevent advanced threats. http://www.sans.org/info/197365
3) Join this webinar to learn about the Infoblox's unique approach to detecting and preventing data exfiltration. http://www.sans.org/info/197370
============================================================NOTABLE RECENT SECURITY ISSUES SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Microsoft Releases Monthly Set of Security Updates for August 2017
Description: Microsoft has released its monthly set of security advisories for vulnerabilities that have been identified and addressed in various products. This month's advisory release addresses 48 new vulnerabilities with 25 of them rated critical, 21 rated important, and 2 rated moderate. These vulnerabilities impact Edge, Hyper-V, Internet Explorer, Remote Desktop Protocol, Sharepoint, SQL Server, the Windows Subsystem for Linux, and more. In addition, Microsoft is also releasing an update for Adobe Flash Player embedded in Edge and Internet Explorer.
Reference: https://portal.msrc.microsoft.com/en-us/security-guidance/summary
Snort SID: 43847-43848, 43851-43852
Title: Adobe Releases Security Updates for Flash Player, Acrobat/Reader, and more
Description: Adobe has released security updates for Flash Player, Acrobat/Reader, Experience Manager, and Digital Editions. This month's Flash security update is fairly small with two vulnerabilities addressed that could result in remote code execution if exploited. The Adobe Acrobat/Reader update however is fairly significant with 67 different vulnerabilities addressed. Most of these vulnerabilities could be exploited to execute arbitrary code on affected systems.
Reference:
- https://helpx.adobe.com/security/products/flash-player/apsb17-23.html
- https://helpx.adobe.com/security/products/acrobat/apsb17-24.html
- https://helpx.adobe.com/security/products/experience-manager/apsb17-26.html
- https://helpx.adobe.com/security/products/Digital-Editions/apsb17-27.html
Snort SID: Detection pending
Title: Android Releases Monthly Security Update August 2017
Description: Android has released its monthly security roll-up to address vulnerabilities that have been identified in the mobile OS. This month's release sees 10 critical vulnerabilities with all of them affecting Mediaserver. The most severe vulnerability could "enable a remote attacker using a specially crafted file to execute arbitrary code within the context of a privileged process." 15 other vulnerabilities have a high severity and 15 are deemed moderate severity. AOSP partners have been notified and updates should be forthcoming for various handsets.
Reference: https://source.android.com/security/bulletin/2017-08-01
Snort SID: Detection pending release of vulnerability information
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
WannaCry Hero Arrested, One of Two Charged with Distribution of Kronos Malware
https://threatpost.com/wannacry-hero-arrested-one-of-two-charged-with-distribution-of-kronos-malware/127186/
Senators Introduce Bipartisan Legislation to Improve Cybersecurity of "Internet-of-Things" (IoT) Devices
https://www.warner.senate.gov/public/index.cfm/pressreleases?id=06A5E941-FBC3-4A63-B9B4-523E18DADB36
Modern Alchemy: Turning XSS into RCE in Electron
https://blog.doyensec.com/2017/08/03/electron-framework-security.html
Microsoft to remove WoSign and StartCom certificates in Windows 10
https://blogs.technet.microsoft.com/mmpc/2017/08/08/microsoft-to-remove-wosign-and-startcom-certificates-in-windows-10/
Taking the FIRST look at Crypt0l0cker
http://blog.talosintelligence.com/2017/08/first-look-crypt0l0cker.html?f_l=s
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-2017-0037
Title: Microsoft Internet Explorer Remote Code Execution (MS17-007)
Vendor: Microsoft
Description: Microsoft Internet Explorer 10 and 11 and Microsoft Edge have a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function in mshtml.dll, which allows remote attackers to execute arbitrary code via vectors involving a crafted Cascading Style Sheets (CSS) token sequence and crafted JavaScript code that operates on a TH element.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)
ID: CVE-2017-0145
Title: Microsoft Windows SMB Remote Code Execution Vulnerability
Vendor: Microsoft
Description: The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0146, and CVE-2017-0148.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
ID: CVE-2017-0290
Title: Microsoft Malware Protection Engine Remote Code Execution Vulnerability
Vendor: Microsoft
Description: NScript in mpengine in Microsoft Malware Protection Engine with Engine Version before 1.1.13704.0, as used in Windows Defender and other products, allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and application crash) via crafted JavaScript code within any file scanned by this engine.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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-2016-7892
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 2017-08-01 - 2017-08-08: COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
SHA 256: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f
MD5: e2ea315d9a83e7577053f52c974f6a5a
VirusTotal: https://www.virustotal.com/file/c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f/analysis/#additional-info
Typical Filename: tempmf582901854.exe
Claimed Product: (unknown)
Detection Name: W32.C3E530CC00-95.SBX.TG
SHA 256: e5a874a0282f2952db3300e9c09d77063cab7b2c408a05321d82994b56cfa0e9
MD5: b004ff361b22d4dd4734c6acee088356
VirusTotal: https://www.virustotal.com/file/e5a874a0282f2952db3300e9c09d77063cab7b2c408a05321d82994b56cfa0e9/analysis/#additional-info
Typical Filename: MailRuUpdater.exe
Claimed Product: MailRuUpdater
Detection Name: W32.E5A874A028-95.SBX.TG
SHA 256: d3dbe14033ad25a5e4ffe1e2b559e53ee1d1799eb54eedbd7a689d6a88fd7137
MD5: f4be84934734b03d7f11e22b4de7fd0a
VirusTotal: https://www.virustotal.com/file/d3dbe14033ad25a5e4ffe1e2b559e53ee1d1799eb54eedbd7a689d6a88fd7137/analysis/#additional-info
Typical Filename: Injector
Claimed Product: Pirrit
Detection Name: OSX.MAC:Malwaregen.19hh.1201
SHA 256: fc8dabab488cd4490879ef3bc33871972450175773debc14e97c07b94404d197
MD5: be626af5fc81be57e912abd52f3cee57
VirusTotal: https://www.virustotal.com/file/fc8dabab488cd4490879ef3bc33871972450175773debc14e97c07b94404d197/analysis/#additional-info
Typical Filename: 404.html
Claimed Product: N/A
Detection Name: W32.FC8DABAB48-95.SBX.TG
SHA 256: 8931083b11b6cfcf641926d56fa5fe05cf3e19a32db1400b05e522114e584739
MD5: d027dadada2c18a546523243800c8292
VirusTotal: https://www.virustotal.com/file/8931083b11b6cfcf641926d56fa5fe05cf3e19a32db1400b05e522114e584739/analysis/#additional-info
Typical Filename: phbkk.exe
Claimed Product: (none)
Detection Name: W32.Malware:Asprox.20im.1201
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