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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.

January 1, 1970
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@RISK: The Consensus Security Vulnerability Alert

Vol. 17, Num. 35

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

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CONTENTS:

NOTABLE RECENT SECURITY ISSUES
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 2017-08-22 - 2017-08-29

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TOP VULNERABILITY THIS WEEK: Researcher Discloses Several Zero Day Vulnerabilities in AT&T Modems/Residenial Gateways

******************** Sponsored By Veracode ********************

Dont' Miss: "Asking the Right Questions about Dynamic Scanning to Secure Web Applications: A Buyer's Guide to App Sec Scanning Tools" with SANS Expert, Barbara Filkins. Learn More: http://www.sans.org/info/198185

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TRAINING UPDATE

-- 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 Cyber Defense Initiative 2017 | Washington, DC | December 12-19 | http://www.sans.org/u/vNd

-- 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) "EDR + NGAV Working Together: SANS Review of Carbon Black Cb Defense" Register: http://www.sans.org/info/198190

2) Security teams must stay ahead of modern day attacks by challenging their defenses automatically, continuously and at scale with breach and attack simulation. Learn More: http://www.sans.org/info/198195

3) In case you missed it: "Accurate behavior analysis enables detection and of malicious insiders, outsiders and IoT device" http://www.sans.org/info/198200

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

Title: Researcher Discloses Several Zero Day Vulnerabilities in AT&T Modems/Residential Gateways
Description: Joseph Hutchins of Nomotion has identified several zero day vulnerabilities affecting AT&T modems/residential gateways that could allow an attacker to perform a variety of different actions. These actions include remotely log into affected devices, gather sensitive information with respect to a network behind the affected device, perform command injection on the affected device, or bypassing the firewall of the modem/residential gateway to directly connect to a device. Given the "trivial" nature these vulnerabilities could be exploited, these flaws were disclosed without notification to Arris or AT&T as Hutchins believes there's "no way people are not exploiting this in the wild".
Reference: https://www.nomotion.net/blog/sharknatto/
Snort SID: Detection pending

Title: Critical Remote Code Execution Vulnerability Patched in Apache Struts
Description: Security researchers at lgtm.com have identified a critical vulnerability in Apache Struts that could allow a remote attacker to execute arbitrary code on vulnerable hosts. This vulnerability, identified as CVE-2017-9805, manifests due to the way Struts deserializes untrusted data. This vulnerability affects "all web applications using the frameworks popular REST plugin" since 2008. Administrators are strongly urged to update their Struts installations to 2.5.13. In the event it's not possible to immediately update, it is suggested to remove the Struts REST plugin or to limit it to server normal pages and JSONs only.
Reference:
- https://struts.apache.org/announce.html#a20170905
- https://lgtm.com/blog/apache_struts_CVE-2017-9805_announcement
- https://lgtm.com/blog/apache_struts_CVE-2017-9805
Snort SID: Detection pending

Title: Two Vulnerabilities in Siemens LOGO! Identified and Patched
Description: Siemens has released a security advisory and software update for a pair of vulnerabilities that were identified in its LOGO! 8 BM devices. These vulnerabilities, identified by Maxim Rupp -- an independent researcher, could allow an attacker to hijack an active user session or to perform man-in-the-middle attacks between LOGO! BM devices and other devices. While an updated firmware image (version 1.81.2) which addresses the session hijacking flaw has been released, Siemens has issued guidance to mitigate the impact of the man-in-the-middle vulnerability.
Reference: https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-087240.pdf
Snort SID: Detection pending release of vulnerability information

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INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

Analyzing the 320 million hashes released by Troy Hunt, founder of "Have I been pwned?"
https://cynosureprime.blogspot.fi/2017/08/320-million-hashes-exposed.html

Detecting debuggers by abusing a bad assumption within Windows
http://www.triplefault.io/2017/08/detecting-debuggers-by-abusing-bad.html

Graftor - But I Never Asked for This
http://blog.talosintelligence.com/2017/09/graftor-but-i-never-asked-for-this.html?f_l=s

Abusing A Writable Windows Service
https://blog.didierstevens.com/2017/09/05/abusing-a-writable-windows-service/

Four Million Time Warner Cable Records Left on Misconfigured AWS S3
https://threatpost.com/four-million-time-warner-cable-records-left-on-misconfigured-aws-s3/127807/

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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)

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MOST PREVALENT MALWARE FILES 2017-08-29 - 2017-09-05: 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: (none)
Detection Name: W32.C3E530CC00-95.SBX.TG

SHA 256: 035fabc744b6457ae93c34bf4a4df378f033aca3998cbaa84e68f08d60b47a66
MD5: dab5d9e9b16b79b48222f9b2304e0473
VirusTotal: https://www.virustotal.com/file/035fabc744b6457ae93c34bf4a4df378f033aca3998cbaa84e68f08d60b47a66/analysis/#additional-info
Typical Filename: 11995591361882.doc
Claimed Product: N/A
Detection Name: W32.035FABC744-95.SBX.TG

SHA 256: 0978fcc7db3a27e180fca68b33d99c6bbe8173054f1cd0ebfd0fe0be35667656
MD5: ffa75a00cfd8b9e84bbf34594fdd7025
VirusTotal: https://www.virustotal.com/file/0978fcc7db3a27e180fca68b33d99c6bbe8173054f1cd0ebfd0fe0be35667656/analysis/#additional-info
Typical Filename: lsmosee.exe
Claimed Product: (none)
Detection Name: W32.0978FCC7DB-100.SBX.VIOC

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: 90827c454855d9e2dd698d0dc8e57cd6616b30ee5c8473aed6160c49df07ff96
MD5: 048a349b164218f9144ecdfd2898a57a
VirusTotal: https://www.virustotal.com/file/90827c454855d9e2dd698d0dc8e57cd6616b30ee5c8473aed6160c49df07ff96/analysis/#additional-info
Typical Filename: 2017-08-56703605-Bill.7z
Claimed Product: N/A
Detection Name: W32.Auto:90827c4548.in05.Talos

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