@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.
September 28, 2017@RISK: The Consensus Security Vulnerability Alert
Vol. 17, Num. 38
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 https://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 2017-09-19 - 2017-09-26
============================================================TOP VULNERABILITY THIS WEEK: Samba Addresses Man in the Middle Vulnerability
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============================================================TRAINING UPDATE
-- SANS October Singapore 2017 | October 9-28 | https://www.sans.org/u/tIA
-- SANS Secure DevOps Summit & Training | Denver, CO | October 10-17 | https://www.sans.org/u/utw
-- SANS Brussels Autumn 2017 | October 16-21 | https://www.sans.org/u/twY
-- SANS Tokyo Autumn 2017 | October 16-28 | https://www.sans.org/u/thk
-- SANS San Diego 2017| October 30-November 4 | https://www.sans.org/u/uWt
-- SANS Pen Test HackFest Summit & Training | Bethesda, MD | November 13-20 | https://www.sans.org/u/waL
-- SANS San Francisco Winter 2017 | November 27-December 2 | https://www.sans.org/u/wgE
-- SANS London November 2017 | November 27-December 2 | https://www.sans.org/u/wgJ
-- SANS Cyber Defense Initiative ® 2017 | Washington, DC | December 12-19 | https://www.sans.org/u/vNd
-- SANS OnDemand and vLive Training | Get an iPad Mini 4, a Galaxy Tab A, or Take $250 Off with Online Training - Register by 9/27! The SANS Training you want with the flexibility you need. https://www.sans.org/u/w15
-- Can't travel? SANS offers online instruction for maximum flexibility
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Contact mentor@sans.org
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-- 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: https://www.sans.org/u/XN
1) Don't Miss: "Accurate behavior analysis enables detection and of malicious insiders, outsiders and IoT device" Register: https://www.sans.org/info/198565
2) In case you missed it: "Turning Threat Data into Threat Intel Using Automated Analysis" https://www.sans.org/info/198570
3) What does your organization consider to be threat intelligence, and how do you use it? Take the SANS CTI survey and enter to win a $400 Amazon gift card or free pass to the SANS CTI Summit: https://www.sans.org/info/198575
============================================================NOTABLE RECENT SECURITY ISSUES SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP
Title: Samba Addresses Man in the Middle Vulnerability Description: Samba has released a security bulletin addressing CVE-2017-12150, a vulnerability which could allow an attacker to man-in-the-middle SMBv1, v2, and v3 connections. CVE-2017-12150 manifests due to the fixes for CVE-2015-5296 being incomplete as well as several other conditions where the vulnerability might be triggered. Samba versions 3.0.25 to 4.6.7 are affected. Samba versions 4.6.8, 4.5.14, and 4.4.16 have been released which address this vulnerability. Reference: https://www.samba.org/samba/security/CVE-2017-12150.html Snort SID: Detection pending release of vulnerability information
Title: Citrix Releases Security Update for NetScaler ADC and NetScaler Gateway Management Interface Description: Citrix has released a security advisory for CVE-2017-14602, an authentication bypass vulnerability affecting NetScaler ADC and NetScaler Gateway Management Interface. An attacker who has access to the NetScaler management interface could potentially exploit this vulnerability and gain administrative access to the appliance. Versions 10.1, 10.5, 11.0, 11.1, and 12.0 have been identified vulnerable. Citrix has released updated versions of NetScaler to address this vulnerability. Reference: https://support.citrix.com/article/CTX227928 Snort SID: Detection pending release of vulnerability information
============================================================INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
Threat Spotlight: Defray Ransomware Hits Healthcare and Education https://www.cylance.com/en_us/blog/threat-spotlight-defray-ransomware-hits-healthcare-and-education.html
CCleaner Command and Control Causes Concern https://blog.talosintelligence.com/2017/09/ccleaner-c2-concern.html
Deloitte hit by cyber-attack revealing clients' secret emails https://www.theguardian.com/business/2017/sep/25/deloitte-hit-by-cyber-attack-revealing-clients-secret-emails
Adobe Private PGP Key Leak a Blunder, But It Could Have Been Worse https://threatpost.com/adobe-private-pgp-key-leak-a-blunder-but-it-could-have-been-worse/128113/
The Great DOM Fuzz-off of 2017 https://googleprojectzero.blogspot.com/2017/09/the-great-dom-fuzz-off-of-2017.html
=========================================================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 2017-09-19 - 2017-09-26: 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: dbf3890b782ac04136c3336814eef97e3c0f4133f9592e882c131c179161b27b MD5: 0c694193ceac8bfb016491ffb534eb7c VirusTotal: https://www.virustotal.com/file/dbf3890b782ac04136c3336814eef97e3c0f4133f9592e882c131c179161b27b/analysis/#additional-info Typical Filename: mssecsvc.exe Claimed Product: (none) Detection Name: W32.Ransom:TrojanRansom.20ks.1201
SHA 256: 8f5a7ec56b6c7aed0476e9a45b7191949166c3c067c0ed40f727e73c177d5434 MD5: e94cfa8a3083add44192befa728f1934 VirusTotal: https://www.virustotal.com/file/8f5a7ec56b6c7aed0476e9a45b7191949166c3c067c0ed40f727e73c177d5434/analysis/#additional-info Typical Filename: Bighits4u_Render.exe Claimed Product: Bighits4U Viewer Detection Name: W32.Variant.20km.1201
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: 5bb5975dd0b781d5fab3721ae66463e64825fccfdcf876bcb8899c2571ed04f4 MD5: 038a5260e24949da9596d3ae64266777 VirusTotal: https://www.virustotal.com/file/5bb5975dd0b781d5fab3721ae66463e64825fccfdcf876bcb8899c2571ed04f4/analysis/#additional-info Typical Filename: 2017 (26 Sep 17).doc Claimed Product: N/A Detection Name: W32.5BB5975DD0-100.SBX.TG
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