@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.
November 30, 2017=============================================================
@RISK: The Consensus Security Vulnerability Alert
November 30, 2017 - Vol. 17, Num. 48
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 2017-11-21 - 2017-11-28
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TOP VULNERABILITY THIS WEEK: Major macOS Bug Identified That Allows Root Access Without a Password
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============================================================
TRAINING UPDATE
-- SANS Cyber Defense Initiative 2017 | Washington, DC | December 12-19 | http://www.sans.org/u/vNd
-- SANS Security East 2018 | New Orleans, LA | January 8-13 | http://www.sans.org/u/xmN
-- SANS Amsterdam January 2018 | January 15-20 | http://www.sans.org/u/wUT
-- SANS Las Vegas 2018 | January 28-February 2 | http://www.sans.org/u/yjg
-- Cyber Threat Intelligence Summit | Bethesda, MD | January 29-February 5 | http://www.sans.org/u/xTH
-- SANS London February 2018 | February 5-10 | http://www.sans.org/u/yjq
-- Cloud Security Summit 2018 | San Diego, CA | February 19-26 | http://www.sans.org/u/yjl
-- SANS Secure Japan 2018 | February 19-March 3 | http://www.sans.org/u/wUY
-- SANS Secure Singapore 2018 | March 12-24 | http://www.sans.org/u/xTM
-- SANS OnDemand and vLive Training | The SANS Training you want with the flexibility you need. Get a 10.5" iPad Pro with Smart Keyboard, or an ASUS Chromebook Flip, or take $400 Off OnDemand or vLive Training when you register by December 13. http://www.sans.org/u/ysi
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-- Live Daytime training with Simulcast - http://www.sans.org/u/WK
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-- Multi-week Live SANS training
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For a list of all upcoming events, on-line and live: http://www.sans.org/u/XN
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NOTABLE RECENT SECURITY ISSUES
SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Major macOS Bug Identified That Allows Root Access Without a Password
Description: A major bug has been identified in macOS that could allow a user to elevate their privileges to that of root on affected systems. This bug manifests due to macOS allowing users to login to the root account if a password has not been set for it. This bug appears to only affect macOS High Sierra. Apple has released a statement that a software update is in the process of being developed. Apple has also released guidance on how to disable and set a root password to mitigate the issue.
Reference:
- https://www.macrumors.com/2017/11/28/macos-high-sierra-bug-admin-access/
- https://support.apple.com/en-us/HT204012
Title: Remote Denial-of-Service Bug in systemd Identified and Patched
Description: A remote denial-of-service vulnerability has been identified in systemd that could cause affected systems to hang if exploited. This vulnerability, assigned CVE-2017-15908, manifests in the DNS resolver within systemd. Exploitation of this vulnerability is achievable if the DNS resolver receives a specially crafted response to a DNS query. Software updates that address this vulnerability have been developed and are available for affected Linux distributions.
Reference:
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15908
- https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1725351
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INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
Uber Reveals 2016 Breach of 57 Million User Accounts
Using DNS to Break Out of Isolated Networks in a AWS Cloud Environment
https://dejandayoff.com/using-dns-to-break-out-of-isolated-networks-in-a-aws-cloud-environment/
Kernel Exploit Demo - Windows 10 privesc via WARBIRD
https://blog.xpnsec.com/windows-warbird-privesc/
Don't Feed Them After Midnight: Reverse-Engineering the Furby Connect
https://www.contextis.com/blog/dont-feed-them-after-midnight-reverse-engineering-the-furby-connect
Using Burp Suite's Collaborator to Find the True IP Address for a .Onion Hidden Service
ROKRAT Reloaded
http://blog.talosintelligence.com/2017/11/ROKRAT-Reloaded.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-2017-8759
Title: Microsoft .NET Framework Remote Code Execution Vulnerability
Vendor: Microsoft
Description: A remote code execution vulnerability exists when Microsoft .NET Framework processes untrusted input. Microsoft is aware of a report that an exploit for CVE-2017-8759 exists in the wild and is being used in targeted attacks.
Microsoft published a .NET security update to address this issue.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
ID: CVE-2017-9805
Title: Apache Struts REST plugin Remote Code Execution (S2-052)
Vendor: Apache Struts
Description: The REST Plugin is using a XStreamHandler with an instance of XStream for deserialization without any type filtering and this can lead to Remote Code Execution when deserializing XML payloads.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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-2017-5638
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-2016-7892
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)
=========================================================
MOST PREVALENT MALWARE FILES 2017-11-21 - 2017-11-28
:COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
SHA 256: 99550ea419a3f49ee1154c9d5ae99b7f925a783028f87286584a0c9fe7bab4f0
MD5: 5bafb135e1d7ba0a5acd0fbbeb2a93e1
Typical Filename: helperamc.zip
Claimed Product: Advanced Mac Cleaner
Detection Name: W32.99550EA419-95.SBX.TG
SHA 256: 238e42e887eddbb4ab164a62874e21b905665b32fe3b5d80473500d6c3f2e8c9
MD5: 3395357300dd177727443c015bcdecfe
Typical Filename: WPA_Kill.exe
Claimed Product: Windows 2003 & XP Anti Product Activation Patch
Detection Name: W32.238E42E887-95.SBX.TG
SHA 256: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f
MD5: e2ea315d9a83e7577053f52c974f6a5a
Typical Filename: Tempmf582901854.exe
Claimed Product: (none)
Detection Name: W32.C3E530CC00-95.SBX.TG
SHA 256: 15716598f456637a3be3d6c5ac91266142266a9910f6f3f85cfd193ec1d6ed8b
MD5: 799b30f47060ca05d80ece53866e01cc
Typical Filename: mf2016341595.exe
Claimed Product: (none)
Detection Name: W32.Generic:Gen.20l1.1201
SHA 256: 7ceaa325d27f178732b0fecceee3a2eda1de7f49970424d39ebdde93c077aa0f
MD5: 8a0a9252ba0f7d46e7b02337ebdad2be
Typical Filename: PCMHelper_u.rar
Claimed Product: (none)
Detection Name: W32.7CEAA325D2-100.SBX.VIOC
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