Gain Top-Notch InfoSec Skills at SANS Las Vegas 2018. Save $400 thru 12/6.

Newsletters: @RISK


@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 18, 2017
=============================================================

@RISK: The Consensus Security Vulnerability Alert

Vol. 17, Num. 34

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 2017-08-15 - 2017-08-22

============================================================

TOP VULNERABILITY THIS WEEK: Two Zero-Day Vulnerabilities In Foxit Reader and PhantomPDF Disclosed; Foxit Developing Patches

******************** Sponsored By VMRay ********************

Join senior SANS Instructor Dave Shackleford and Carsten Willems, co-founder of VMRay to learn how automated threat analysis is the key to turning millions of raw data points into actionable intelligence. The webinar concludes with an interactive Q&A with our experts. CPE Credit with SANS is available to all attendees. Register: http://www.sans.org/info/197730

============================================================

TRAINING UPDATE

-- SANS Network Security | Las Vegas, NV | September 10-17 | http://www.sans.org/u/rIS

-- 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 San Diego 2017| October 30-November 4 | http://www.sans.org/u/uWt

-- SANS OnDemand and vLive Training | Get an iPad Pro (10.5") with Smart Keyboard, an HP Chromebook 13 G1 or take $350 Off OnDemand or vLive Training when you register by August 30! http://www.sans.org/u/uWo

-- 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, Dublin, Singapore, Brussels, and Seattle 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) 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/197735

2) Don't Miss: "Threat Hunting with Endpoints: A Methodology for Effective Detection and Agile Response." http://www.sans.org/info/197740

3) Webcast: "The Efficiency of Context: Review of WireX Network Forensics Platform" Register: http://www.sans.org/info/197745

============================================================

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

Title: Two Zero-Day Vulnerabilities In Foxit Reader and PhantomPDF Disclosed; Foxit Developing Patches
Description: The Zero Day Initiative has disclosed a pair of vulnerabilities in Foxit Reader and PhantomPDF that could be used to execute arbitrary code on vulnerable systems. These flaws, identified as CVE-2017-10951 and CVE-2017-10952, manifest due to insufficient validation of user-supplied data, resulting in command injection and file write conditions respectively. Foxit has acknowledged these vulnerabilities and has indicated that are developing patches for both flaws despite initially disregarding them due to miscommunication.
Reference: https://www.thezdi.com/blog/2017/8/17/busting-myths-in-foxit-reader
Snort SID: Detection pending

Title: Drupal Releases Maintenance Update, Fixes 3 Vulnerabilities
Description: Drupal has released a maintenance update containing fixes for three access bypass vulnerabilities. Two of the vulnerabilities (CVE-2017-6923, CVE-2017-6924) are "moderately critical" and affect Views and the REST API. The remaining vulnerability (CVE-2017-6925) is "critical" and affects the entity access system which "could allow unwanted access to view, create, update, or delete entities." The three vulnerabilities are addressed in Drupal 8.3.7.
Reference: https://www.drupal.org/SA-CORE-2017-004
Snort SID: Detection pending release of vulnerability information

Title: Cisco Releases Security Advisory for Application Policy Infrastructure Controller (APIC)
Description: Cisco has released a security advisory for its Application Policy Infrastructure Controller (APIC) to address CVE-2017-6767. CVE-2017-6767 is a privilege escalation vulnerability which manifests as a limitation in how the Role-Based Access Control (RBAC) "grants privileges to remotely authenticated users when login occurs via SSH directly to the local management interface." As a result, a remote, authenticated attacker could elevate their privileges to that of the user who last logged in. Note that the attacker cannot obtain root privileges. Cisco has released a software update that addresses this vulnerability.
Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170816-apic1

============================================================

INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

Hacker Publishes iOS Secure Enclave Firmware Decryption Key
https://threatpost.com/hacker-publishes-ios-secure-enclave-firmware-decryption-key/127524/

Solving a Danish Defense Intelligence Puzzle
https://safiire.github.io/blog/2017/08/19/solving-danish-defense-intelligence-puzzle/

Login bypass in Ubiquiti airMAX/airOS before 8.0.2, 7.2.5, 6.0.2, 5.6.15 if airControl web-UI was used (Patched 2017-03-28)
http://www.nicksherlock.com/2017/08/login-bypass-in-ubiquiti-airmax-airos-if-aircontrol-web-ui-was-used/

How I Accidentally Framed Myself for a Hacking Frenzy
http://blog.portswigger.net/2017/08/how-i-accidentally-framed-myself-for.html

Booters with Chinese Characteristics: The Rise of Chinese Online DDoS Platforms
http://blog.talosintelligence.com/2017/08/chinese-online-ddos-platforms.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 2017-08-15 - 2017-08-22: 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:
Detection Name: W32.C3E530CC00-95.SBX.TG

SHA 256: 87afd627b678da78d879dfe11c147b10f5db6e07cd16e5728ca33579e73bf89f
MD5: 515ea84f7ca8f59f7bb4fb5714913a72
VirusTotal: https://www.virustotal.com/file/87afd627b678da78d879dfe11c147b10f5db6e07cd16e5728ca33579e73bf89f/analysis/#additional-info
Typical Filename: helperamc.zip
Claimed Product: Advanced Mac Cleaner
Detection Name: W32.87AFD627B6-95.SBX.TG

SHA 256: f13e2c5ae7e3f949a575856fb0b5d285eae746c7b77cf6272a6e11e99fcec9e6
MD5: 63cbfc8979b6a615ff49b2b32054ac29
VirusTotal: https://www.virustotal.com/file/f13e2c5ae7e3f949a575856fb0b5d285eae746c7b77cf6272a6e11e99fcec9e6/analysis/#additional-info
Typical Filename: Invoice 6848.doc
Claimed Product: N/A
Detection Name: W32.F13E2C5AE7-100.SBX.TG

SHA 256: 275349b37867e433784b0df2dc97622ea23009ce0ca90e1313db94029fa620ad
MD5: 2416f49b0e091c3076c9453b98dde8e0
VirusTotal: https://www.virustotal.com/file/275349b37867e433784b0df2dc97622ea23009ce0ca90e1313db94029fa620ad/analysis/#additional-info
Typical Filename: 7oslD.wsf
Claimed Product: (unknown)
Detection Name: Banker:EPACK-tpd

SHA 256: b286cc38f2db6b5576974a552a341a2498dbaadb47b956956f6c437ac95f35a6
MD5: 2e5c090a41c23b7a28ac4b39b29f4e3b
VirusTotal: https://www.virustotal.com/file/b286cc38f2db6b5576974a552a341a2498dbaadb47b956956f6c437ac95f35a6/analysis/#additional-info
Typical Filename: 9915224735260.doc
Claimed Product: N/A
Detection Name: W32.Trojan.NM

=============================================================

(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, 8120 Woodmont Ave., Suite 310, Bethesda, MD 20814-2743