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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.

June 20, 2019

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     @RISK: The Consensus Security Vulnerability Alert

               June 20, 2019 - Vol. 19, Num. 25


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 June 13 - 20

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TOP VULNERABILITY THIS WEEK: New malvertising campaign delivers Buran ransomware


*************** Sponsored By AWS Marketplace ***************


Strategies for implementing integrated endpoint security capabilities in AWS - live webcast featuring SANS analyst Thomas Banasik and AWS solutions architect David Aiken! Learn how to create a readily deployable, fully integrated endpoint security strategy for protecting workloads in the cloud. June 27, 2 PM EDT. http://www.sans.org/info/213095


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TRAINING UPDATE

 

-- SANS Network Security 2019 | Las Vegas, NV | September 9-16 | https://www.sans.org/event/network-security-2019


-- SANS Cyber Defence Japan 2019 | July 1-13 | https://www.sans.org/event/cyber-defence-japan-2019


-- SANS London July 2019 | July 8-13 | https://www.sans.org/event/london-july-2019


-- SANS Rocky Mountain 2019 | Denver, CO | July 15-20 | https://www.sans.org/event/rocky-mountain-2019


-- SANS San Francisco Summer 2019 | July 22-27 | https://www.sans.org/event/san-francisco-summer-2019


-- Pen Test Hackfest Europe 2019 | Berlin, DE | July 22-28 | https://www.sans.org/event/pentest-hackfest-eu-july-2019


-- DFIR Summit & Training 2019 | Austin, TX | July 25-August 1 | https://www.sans.org/event/digital-forensics-summit-2019


-- Supply Chain Cybersecurity Summit 2019 | Arlington, VA | August 12-19 | https://www.sans.org/event/supply-chain-cybersecurity-summit-2019


-- SANS Tokyo Autumn 2019 | September 30-October 12 | https://www.sans.org/event/tokyo-autumn-2019


-- SANS OnDemand and vLive Training

Get an iPad, Samsung Galaxy Tab A, or Take $250 off through June 26 with OnDemand or vLive training.

https://www.sans.org/online-security-training/specials/


-- Can't travel? SANS offers online instruction for maximum flexibility

-- Live Daytime training with Simulcast - https://www.sans.org/simulcast

-- Evening training 2x per week for 6 weeks with vLive | https://www.sans.org/vlive

-- Anywhere, Anytime access for 4 months with OnDemand format | https://www.sans.org/ondemand/


-- Single Course Training

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Community SANS | https://www.sans.org/community/

 

-- View the full SANS course catalog and Cyber Security Skills Roadmap

https://www.sans.org/courses

https://www.sans.org/cyber-security-skills-roadmap


********************** Sponsored Links: ********************


1) SANS Pen Test HackFest Summit - Our Call for Presentations is open! Submit a talk proposal:  http://www.sans.org/info/213305


2) Keynotes announced for the inaugural SANS Supply Chain Cybersecurity Summit in Washington, DC! | Summit agenda:  http://www.sans.org/info/213310


3) New to cybersecurity? Looking to improve Pentesting, Forensic or Cyber Defence skills? Level Up with SANS! http://www.sans.org/info/213315


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NOTABLE RECENT SECURITY ISSUES

SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP


Title: Attackers redirect users to RIG exploit kit, downloads ransomware

Description: A new malvertising campaign in the wild attempts to trick users into clicking on malicious ads, then sending them to a web page containing the RIG exploit kit. Once infected, the kit then downloads the Buran ransomware. Buran is a fairly straightforward ransomware, implementing its encryption process and then displaying a ransom note to the victim.

Reference: https://securityintelligence.com/news/malvertising-campaign-infects-users-with-buran-ransomware-via-the-rig-exploit-kit/

Snort SIDs: 50457, 50458

 

Title: New Linux malware believed to use code from past Chinese malware

Description: A new malware known as "HiddenWasp" has been spotted in the wild targeting Linux machines. HiddenWasp contains several methods to avoid detection by antivirus solutions, and the attackers are still actively deploying it. Researchers discovered that the malware contains code that is copy and pasted from other, past attacks from Chinese actors.

Reference: https://koddos.net/blog/linux-targeted-by-chinese-malware-dubbed-hiddenwasp/

Snort SIDs: 48521 - 48528


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INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY


The U.S. recently stepped up cyber attacks against the Russian electric grid, according to a new report.

https://www.nytimes.com/2019/06/15/us/politics/trump-cyber-russia-grid.html


Security researchers and U.S. power regulators are warning that some of the world's most powerful hacking groups have zeroed in on attacking U.S. power suppliers.

https://www.eenews.net/stories/1060575609


The U.S. Department of Homeland Security issued a warning that all users should update their Microsoft products as soon as possible to protect against a wormable bug disclosed in May.

https://www.us-cert.gov/ncas/alerts/AA19-168A


A new backdoor called "HAWKBALL" is targeting government agencies in Central Asia via Microsoft Office vulnerabilities.

https://www.fireeye.com/blog/threat-research/2019/06/government-in-central-asia-targeted-with-hawkball-backdoor.html


More than seven million Venmo transactions were posted to GitHub, showing that the money-sending app's data can be scraped easily.

https://www.infosecurity-magazine.com/news/7m-venmo-transactions-published-on-1/


Several malicious apps on the Google Play store are able to bypass two-factor authentication systems to steal users' Bitcoin.

https://www.securityweek.com/android-apps-target-bitcoin-passing-2fa


Two new class-action lawsuits claim Amazon's Alexa devices record and store children's voice recordings without their knowledge.

https://threatpost.com/amazon-alexa-secretly-records-children/145708/


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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-2019-2729

Title:    Oracle WebLogic Deserialization Remote Code Execution Vulnerability

Vendor:    Oracle

Description: A deserialization vulnerability via XMLDecoder exists in Oracle WebLogic Server. This remote code execution vulnerability is remotely exploitable without authentication, meaning it may be exploited over a network without the need for a username and password. A remote attacker could exploit this vulnerability to execute arbitrary code on the targeted system.

CVSS v2 Base Score:    10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)


ID:        CVE-2019-11477

Title:    Linux Kernel Integer Overflow Vulnerability

Vendor:    Linux

Description: An integer overflow flaw was found in the way the Linux kernel networking subsystem processed TCP Selective Acknowledgment (SACK) segments. While processing SACK segments, the Linux kernel socket buffer (SKB) data structure becomes fragmented. Each fragment is about TCP maximum segment size (MSS) bytes. To efficiently process SACK blocks, the Linux kernel merges multiple fragmented SKBs into one, potentially overflowing the variable holding the number of segments. A remote attacker could use this flaw to crash the Linux kernel by sending a crafted sequence of SACK segments on a TCP connection with small value of TCP MSS, resulting in a denial of service.

CVSS v2 Base Score:    9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)


ID:        CVE-2019-11707

Title:    Mozilla Firefox and Firefox ESR Denial of Service Vulnerability

Vendor:    Mozilla

Description: Mozilla Firefox and Firefox ESR are exposed to a denial of service vulnerability. A type confusion vulnerability exists in Mozilla Firefox that can result in an exploitable crash due to issues in Array.pop which can occur when manipulating JavaScript objects. This can allow for an exploitable crash.

CVSS v2 Base Score:    7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)


ID:        CVE-2019-1053

Title:    Microsoft Windows Shell Local Privilege Escalation Vulnerability

Vendor:    Microsoft

Description: Microsoft Windows is exposed to a local privilege escalation vulnerability that exists when the Windows Shell fails to validate folder shortcuts. An attacker who successfully exploited the vulnerability could elevate privileges by escaping a sandbox.

CVSS v2 Base Score:    4.3 (AV:L/AC:L/Au:S/C:P/I:P/A:P)


ID:        CVE-2019-5590

Title:    Fortinet Fortiweb Cross Site Scripting Vulnerability

Vendor:    Fortinet

Description: Fortinet Fortiweb is exposed to a cross site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie based authentication credentials and launch other attacks. The URL part of the report message is not encoded in Fortinet FortiWeb which may allow an attacker to execute unauthorized code or commands via attack reports generated in HTML format.

CVSS v2 Base Score:    9.0 (AV:N/AC:M/Au:N/C:C/I:C/A:P)


ID:        CVE-2019-12840

Title:    Webmin Arbitrary Command Injection Vulnerability

Vendor:    Webmin

Description: Webmin is exposed to a remote command injection vulnerability. An attacker may exploit this issue to execute arbitrary commands on the underlying operating system with root privileges. Any user authorized to the "Package Updates" module can execute arbitrary commands with root privileges via the data parameter to update.cgi.

CVSS v2 Base Score:    9.0 (AV:N/AC:M/Au:N/C:C/I:C/A:P)


ID:        CVE-2019-12766

Title:    Joomla! Core Cross Site Scripting Vulnerabilitiy

Vendor:    Joomla

Description: Joomla! Core is exposed to a cross site scripting vulnerability because it fails to sanitize user supplied input. The subform fieldtype does not sufficiently filter or validate input of subfields. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie based authentication credentials and launch other attacks.

An issue was discovered in Joomla! before 3.9.7.

CVSS v2 Base Score:    4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)


ID:        CVE-2019-9701

Title:    Symantec DLP Cross Site Scripting Vulnerability

Vendor:    Symantec

Description: A cross-site scripting vulnerability exists in DLP, a type of issue that can enable attackers to inject client-side scripts into web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same origin policy.

CVSS v2 Base Score:    5.2 (AV:A/AC:L/Au:S/C:P/I:P/A:P)


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


MOST PREVALENT MALWARE FILES June 13 - 20:

COMPILED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP


SHA 256: 3f6e3d8741da950451668c8333a4958330e96245be1d592fcaa485f4ee4eadb3

MD5: 47b97de62ae8b2b927542aa5d7f3c858

VirusTotal: https://www.virustotal.com/#/file/3f6e3d8741da950451668c8333a4958330e96245be1d592fcaa485f4ee4eadb3/details

Typical Filename: qmreportupload.exe

Claimed Product: qmreportupload

Detection Name: Win.Trojan.Generic::in10.talos


SHA 256: 7acf71afa895df5358b0ede2d71128634bfbbc0e2d9deccff5c5eaa25e6f5510

MD5: 4a50780ddb3db16ebab57b0ca42da0fb

VirusTotal: https://www.virustotal.com/#/file/7acf71afa895df5358b0ede2d71128634bfbbc0e2d9deccff5c5eaa25e6f5510/details

Typical Filename: wup.exe

Claimed Product: N/A

Detection Name: W32.7ACF71AFA8-95.SBX.TG


SHA 256: 15716598f456637a3be3d6c5ac91266142266a9910f6f3f85cfd193ec1d6ed8b

MD5: 799b30f47060ca05d80ece53866e01cc

VirusTotal: https://www.virustotal.com/#/file/15716598f456637a3be3d6c5ac91266142266a9910f6f3f85cfd193ec1d6ed8b/details

Typical Filename: 15716598f456637a3be3d6c5ac91266142266a9910f6f3f85cfd193ec1d6ed8b.bin

Claimed Product: N/A

Detection Name: W32.Generic:Gen.22fz.1201


SHA 256: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f

MD5: e2ea315d9a83e7577053f52c974f6a5a

VirusTotal: https://www.virustotal.com/#/file/c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f/details

Typical Filename: Tempmf582901854.exe

Claimed Product: N/A

Detection Name: W32.AgentWDCR:Gen.21gn.1201


SHA 256: 46b241e3d33811f7364294ea99170b35462b4b5b85f71ac69d75daa487f7cf08

MD5: db69eaaea4d49703f161c81e6fdd036f

VirusTotal: https://www.virustotal.com/gui/file/46b241e3d33811f7364294ea99170b35462b4b5b85f71ac69d75daa487f7cf08/details

Typical Filename: xme32-2141-gcc.exe

Claimed Product: N/A

Detection Name: W32.46B241E3D3-95.SBX.TG


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