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@RISK: The Consensus Security Vulnerability Alert
September 27, 2018 - Vol. 18, Num. 39

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

CONTENTS:

NOTABLE RECENT SECURITY ISSUES
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES September 20 - 27, 2018
TOP VULNERABILITY THIS WEEK: Xbash malware combines capabilities of ransomware, cryptominer

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

Title: New Xbash malware targets Windows, Linux systems
Description: Researchers discovered a new malware family known as “Xbash” in the wild targeting Windows and Linux systems. Xbash combines features of ransomware and cryptocurrency miners and has the ability to self-propagate. The malware spreads by attacking weak passwords and existing software vulnerabilities.
Reference: https://researchcenter.paloaltonetworks.com/2018/09/unit42-xbash-combines-botnet-ransomware-coinmining-worm-targets-linux-windows/
Snort SID: 47866 - 47873

Title: Adobe discloses bugs in Acrobat and Reader
Description: Adobe released security updates for Acrobat and Reader for Windows and MacOS. Successful exploitation of the critical and important vulnerabilities could lead to arbitrary code execution.
Reference: https://helpx.adobe.com/security/products/acrobat/apsb18-34.html
Snort SID: 47852 - 47857, 47883, 47884

Title: Three important vulnerabilities in Cisco Webex
Description: Multiple bugs exist in Cisco Webex Network Recording Player for Advanced Recording Format that could allow an attacker to execute arbitrary code on a targeted system. The vulnerabilities lie in the way that Webex handles recorded files.
Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180919-webex
Snort SID: 47878 - 47879

INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

The creators of the Mirai botnet avoided jail time by striking a deal with prosecutors and agreeing to work with the FBI to fight cybercrime.
https://www.wired.com/story/mirai-botnet-creators-fbi-sentencing/

Government Payment Service Inc. — a popular website for individuals to pay for government services and fines — leaked more than 14 million customers’ records.
https://krebsonsecurity.com/2018/09/govpaynow-com-leaks-14m-records/

The U.K. is preparing to establish a new agency that will regulate the use of the internet, including implementing age restrictions for social media.
https://www.buzzfeed.com/alexwickham/uk-government-regulator-internet

The White House released a new plan that outlines ways in which the U.S. hopes to go on the offensive with is cyber capabilities — including targeting Russia.
https://www.cyberscoop.com/white-house-cyber-strategy-john-bolton-announcement/

Online retailer Newegg suffered a monthlong data breach that impacted customers’ credit card information, the same attack that recently targeted British Airways and Ticketmaster U.K.
https://www.theverge.com/2018/9/19/17879630/newegg-user-credit-card-info-data-breach-hack

The U.S. State Department’s classified email server was recently hacked. A spokesperson for the agency says that less than 1 percent of employees’ inboxes were breached.
https://www.cnn.com/2018/09/17/politics/state-department-email-breach/index.html

Japanese cryptocurrency exchange Zaif lost $60 million worth of digital coins in an attack.
http://fortune.com/2018/09/20/cryptocurrency-exchange-hack-zaif-japan-60-million/

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-2018-11776
Title: Apache Struts 2 Namespace Remote Code Execution Vulnerability (S2-057)
Vendor: Apache Software Foundation
Description: Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when using results with no namespace and in same time, its upper action(s) have no or wildcard namespace. Same possibility when using url tag which doesn’t have value and action set and in same time, its upper action(s) have no or wildcard namespace.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2018-2628
Title: Oracle Weblogic Deserialization Remote Code Execution Vulnerability
Vendor: Oracle
Description: Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Core Components). Supported versions that are affected are 10.3.6.0, 12.1.3.0, 12.2.1.2 and 12.2.1.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server.
CVSS v2 Base Score: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)

ID: CVE-2018-8174
Title: Windows VBScript Engine Remote Code Execution Vulnerability
Vendor: Microsoft
Description: The VBScript engine contains a remote code execution vulnerability due to how it handles objects in memory. An attacker could execute arbitrary code in the context of the current user.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)

ID: CVE-2018-7600
Title: Drupal Core Remote Code Execution Vulnerability (SA-CORE-2018-002)
Vendor: Drupal
Description: Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1 allows remote attackers to execute arbitrary code because of an issue affecting multiple subsystems with default or common module configurations.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2018-0886
Title: Microsoft Credential Security Support Provider Remote Code Execution Vulnerability
Vendor: Microsoft
Description: The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka “CredSSP Remote Code Execution Vulnerability”.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)

ID: CVE-2018-4878
Title: Adobe Flash Player Remote Code Execution Vulnerability (APSA18-01)
Vendor: Adobe
Description: A critical vulnerability exists in Adobe Flash Player 28.0.0.137 and earlier versions. Successful exploitation could potentially allow an attacker to take control of the affected system. Adobe is aware of a report that an exploit for CVE-2018-4878 exists in the wild and is being used in targeted attacks.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-12636
Title: Apache CouchDB Remote Code Execution Vulnerability
Vendor: Apache Software Foundation
Description: CouchDB administrative users can configure the database server via HTTP(S). Some of the configuration options include paths for operating system-level binaries that are subsequently launched by CouchDB. This allows an admin user in Apache CouchDB before 1.7.0 and 2.x before 2.1.1 to execute arbitrary shell commands as the CouchDB user, including downloading and executing scripts from the public internet.
CVSS v2 Base Score: 9.0 (AV:N/AC:L/Au:S/C:C/I:C/A:C)

ID: CVE-2017-10271
Title: Oracle WebLogic WLS Security Component Remote Code Execution
Vendor: Oracle
Description: Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Security). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.1.0 and 12.2.1.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server.
CVSS v2 Base Score: 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)

MOST PREVALENT MALWARE FILES September 20 - 27, 2018
COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

SHA 256: d8647dfb73ad636c7c1a743754b47ff1824c11cfef040104efabca92715ffcff1
MD5: f174283dc138a4e412afbb3395d4288f
VirusTotal: https://www.virustotal.com/#/file/d8647dfb73ad636c7c1a743754b47ff1824c11cfef040104efabca92715ffcff/details
Typical Filename: maftask.zip
Claimed Product: N/A
Detection Name: OSX.D8647DFB73.agent.tht.Talos

SHA 256: 2730b9afbda5db068b8736e49b329e49aa0156b30180af2fa7bb178151e17a0a
MD5: 14c543a105c1b089879d5eb7a8ac45f1
VirusTotal: https://www.virustotal.com/#/file/2730b9afbda5db068b8736e49b329e49aa0156b30180af2fa7bb178151e17a0a/details
Typical Filename: ServicePlug.zip
Claimed Product: N/A
Detection Name: W32.2730B9AFBD-87.SBX.VIOC

SHA 256: 253676d93e6b79d119c99967e407926052df8b5520948069a2cac5e9ec5c7a7f
MD5: cbdef3b550a24cdfbb96a7501337a14f
VirusTotal: https://www.virustotal.com/#/file/253676d93e6b79d119c99967e407926052df8b5520948069a2cac5e9ec5c7a7f/details
Typical Filename: diantz.exe
Claimed Product: Microsoft Cabinet Maker
Detection Name: Win.Trojan.Emotet.hunt.Talos

SHA 256: c59ac374df03908a863bb5e2a8cfd911b788f9751b4d5d4d075f013b75195217
MD5: be4e947c89ee40058f37534c4a3d3f34
VirusTotal: https://www.virustotal.com/#/file/c59ac374df03908a863bb5e2a8cfd911b788f9751b4d5d4d075f013b75195217/details
Typical Filename: helperamc.zip
Claimed Product: Advanced Mac Cleaner
Detection Name: Auto.C59AC3.212256.in02

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