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@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.

March 30, 2017

@RISK: The Consensus Security Vulnerability Alert

Vol. 17, Num. 13

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



MOST PREVALENT MALWARE FILES 2017-03-21 - 2017-03-28


TOP VULNERABILITY THIS WEEK: Apple Releases Security Updates for iOS, macOS, tvOS, watchOS, and more

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BEC "Wake-up Call": 2 Companies Lose $100M to Email Scam

The FBI just arrested a Lithuanian man for stealing $100M from two U.S. companies by impersonating their Asian computer hardware supplier. This sophisticated email attack easily evaded Secure Email Gateways. Learn the techniques used in the attack, cyber kill chain, & how to avoid becoming the next $100M victim. http://www.sans.org/info/193842


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Title: Apple Releases Security Updates for iOS, macOS, tvOS, watchOS, and more
Description: Apple has release a security updates for a number of supported products such as iOS, macOS, tvOS, watchOS, iWork, Safari, and macOS Server. These updates addresses numerous vulnerabilities, several of which are severe. One particular vulnerability that should be noted is CVE-2017-2485, a remote code execution vulnerability manifesting as a input validation error when parsing X.509 certificates. Exploitation of this vulnerability is possible if a user visits a website that serves the client a malicious certificate. Patches for CVE-2017-2485 and other flaws are available for download and installation.
Reference: https://support.apple.com/en-us/HT201222
Snort SID: 41999; Additional detection pending release of vulnerability information

Title: LastPass Releases Security Updates Addressing 3 Vulnerabilities
Description: LastPass has released security updates to address 3 vulnerabilities within its password manager browser extensions that were responsibly disclosed by Tavis Ormandy of Google's Project Zero. One of the vulnerabilities is a password theft flaw that affects LastPass 3.3.2 for Firefox. The second is a remote code execution flaw via proxying internal RPC commands in LastPass. The third vulnerability is a cross-site scripting bug in the LastPass extension for Firefox. All three vulnerabilities have been patched and LastPass has pushed updated browser extensions for Firefox, Chrome and other browsers.

Title: Cisco Releases Semi-annual Security Updates for IOS and IOS XE
Description: Cisco has released its semi-annual security advisory bundle for IOS and IOS XE. In total, five vulnerabilities were addressed with four of them being denial of service flaws and one being an http command injection vulnerability. The denial of service flaws manifest in various parts such as DHCP, L2TP, Zero Touch Provisioning, and the http interface for IOS XE. The http command injection vulnerability carries with it a "high" severity rating, but is only exploitable if an attacker is authenticated via the http interface. Software updates that address these flaws are available.
Snort SID: 42060-42061, 42069-42071



Microsoft Word File Spreads Malware Targeting Both Apple Mac OS X and Microsoft Windows

Google to gradually distrust Symantec's CA for mis-issuing 30,000 httpS certs

PoC || GTFO 0x14 Released!

Detecting and mitigating elevation-of-privilege exploit for CVE-2017-0005

eBay Asks Users to Downgrade Security



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-2017-7269
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 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 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-2016-7200
Title: Microsoft Edge Scripting Engine Memory Corruption Code Execution Vulnerability
Vendor: Microsoft
Description: The Chakra JavaScript scripting engine in Microsoft Edge allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-7201, CVE-2016-7202, CVE-2016-7203, CVE-2016-7208, CVE-2016-7240, CVE-2016-7242, and CVE-2016-7243.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/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 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)

ID: CVE-2016-1017
Title: Adobe Flash Player "AS2 LoadVars" Use-after-free Code Execution Vulnerability (APSA16-10)
Vendor: Adobe
Description: Use-after-free vulnerability in the LoadVars.decode function in Adobe Flash Player before and 19.x through 21.x before on Windows and OS X and before on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1011, CVE-2016-1013, CVE-2016-1016, and CVE-2016-1031.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

ID: CVE-2016-0189
Title: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
Vendor: Microsoft
Description: The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-0187.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)


MOST PREVALENT MALWARE FILES 2016-03-21 - 2017-03-28:

SHA 256: 24a4cffbe3b0c9394fa95cd2e8437210cd00b940f29884265134d0b53387e4c9
MD5: 335889e42e25203c77e9553e3987b6ae
VirusTotal: https://www.virustotal.com/file/24a4cffbe3b0c9394fa95cd2e8437210cd00b940f29884265134d0b53387e4c9/analysis/#additional-info
Typical Filename: helperamc.zip
Claimed Product: Advanced Mac Cleaner
Detection Name: W32.Trojan.NM

SHA 256: e8f80d0b97ecb8ccb06741e99e04eb5c843c0d76c6ba40047b917033f0510386
MD5: 68047ef39c0958335c5ae9c5148c044a
VirusTotal: https://www.virustotal.com/file/e8f80d0b97ecb8ccb06741e99e04eb5c843c0d76c6ba40047b917033f0510386/analysis/#additional-info
Typical Filename: mfon.zip
Claimed Product: Mac File Opener
Detection Name: W32.Trojan.NM

SHA 256: 2e373aabfe36bc130c9213def9a5eabec4b2d13e3e2d940a1eeed7ec35cf8c27
MD5: 05a655697861ad4fbd4f86d5468fd700
VirusTotal: https://www.virustotal.com/file/2e373aabfe36bc130c9213def9a5eabec4b2d13e3e2d940a1eeed7ec35cf8c27/analysis/#additional-info
Typical Filename: ProntoApp
Claimed Product: ProntoApp
Detection Name: OSX.Variant.20df.1201

SHA 256: ad3e0cc9ffa729abf7a19fc7d42a6c8855e05b7a15fec6db2f6a46fae0563ded
MD5: 2e471eefa8680d901ac459080b3d9996
VirusTotal: https://www.virustotal.com/file/ad3e0cc9ffa729abf7a19fc7d42a6c8855e05b7a15fec6db2f6a46fae0563ded/analysis/#additional-info
Typical Filename: winjilwjp.exe
Claimed Product: (none)
Detection Name: W32.Malware:Gen.20eu.1201

SHA 256: 43a28be6d2258245a4cd1ba5d1e8c28b86ed388b852c5d2954434cd3de4d6080
MD5: 2a9e2f5a8dccdaa86fb33838d1b174a7
VirusTotal: https://www.virustotal.com/file/43a28be6d2258245a4cd1ba5d1e8c28b86ed388b852c5d2954434cd3de4d6080/analysis/#additional-info
Typical Filename: t8MedInt.exe
Claimed Product: Mindspark Toolbar
Detection Name: W32.Adware.19nm.1201


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