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Newsletters: @RISK


@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 5, 2013
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@RISK: The Consensus Security Vulnerability Alert

Vol. 13, Num. 36

Providing a reliable, weekly summary of newly discovered attack vectors, vulnerabilities with active exploits, and explanations of how recent attacks worked.

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CONTENTS:

NOTABLE RECENT SECURITY ISSUES
USEFUL EXPLANATIONS OF HOW NEW ATTACKS WORK
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 8/27/2013 - 9/3/2013
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TOP VULNERABILITY THIS WEEK: A pre-authentication bug in the SSH daemon on Mikrotik-branded routers was announced this week by noted security researcher "kingcope", who included a simple Perl one-liner that would cause a crash and detailed information on system state for another bug that could lead to remote code execution. Over a quarter-million Internet-facing systems appear to be vulnerable at this time, and no patch is currently available from the manufacturer.

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TRAINING UPDATE

- -- SANS Network Security 2013 Las Vegas, NV September 14-23, 2013
50 courses. Bonus evening presentations include The Security Impact of IPv6; Unleashing the Dogs of (cyber) War; and InfoSec Vertigo: Small Medical Lab Wages War Against InfoSec Vendor, US Government, and Big DC Law Firm.
http://www.sans.org/event/network-security-2013

-- SANS Seattle 2013 Seattle, WA October 7-14, 2013
8 courses. Bonus evening presentations include "So What?" The Most Important Question in Information Security; Why Our Defenses are Failing Us. One Click is All it Takes ...; and Sick Anti-Analysis Mechanisms in the Wild.
http://www.sans.org/event/seattle-2013

- -- SANS Baltimore 2013 Baltimore, MD October 14-19, 2013
9 courses. Bonus evening presentations include An Introduction to PowerShell for Security Assessments; The Security Impact of IPv6; and Tales from the Crypt: TrueCrypt Analysis.
http://www.sans.org/event/baltimore-2013

- -- SANS Forensics Prague 2013Prague, Czech RepublicOctober 6-13 2013
SANS's European forensics summit and dedicated forensics training event. Four of SANS's most important forensics training courses and opportunities to network with leading digital forensics experts.
http://www.sans.org/event/forensics-prague-2013

- -- SANS Dubai 2013Dubai, UAEOctober 26th - November 7th 2013
SANS returns to Dubai with four essential courses at the Hilton Jumeirah Beach.
http://www.sans.org/event/dubai-2013

- -- Multi-week Live SANS training
http://www.sans.org/mentor/about
Contact mentor@sans.org

- -- Looking for training in your own community?
http://www.sans.org/community/

- --Save on On-Demand training (30 full courses) - See samples at
http://www.sans.org/ondemand/specials

Plus Johannesburg, Abu Dhabi, Seoul, and Bangalore all in the next 90 days. For a list of all upcoming events, on-line and live: www.sans.org

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NOTABLE RECENT SECURITY ISSUES
SELECTED BY THE SOURCEFIRE VULNERABILITY RESEARCH TEAM

Title: Intel microcode update fixes potential DoS for huge array of processors
Description: An update to the software that helps translate assembler instructions into hardware operations on CPUs was released by Intel to little fanfare last month, but is now raising eyebrows after a message posted to the Debian-User and Debian-Security lists this week, which stated that the update fixes a potential crash across a huge swath of modern Intel processors. While no details are publicly available at this time about what is required to trigger such a crash - Intel describes the cause as "a complex sequence of internal processor micro-architectural events" in its official Erratum AAK167 - the emergence of an exploit for this issue has the potential to cause an unprecedented worldwide denial of service, given the range of impacted processors. Concerned administrators of Debian stable systems have instructions on how to apply the update now, and will have it automatically at the next point release; users of other Linux distributions can get the patch from Intel directly or look for it in their OS' update mechanism. Windows users should look to their hardware manufacturer for BIOS updates.
Reference:
http://lists.debian.org/debian-user/2013/09/msg00126.html
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23082
http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-5500-specification-update.pdf
Snort SID: N/A
ClamAV: N/A

Title: Remotely exploitable, pre-authentication vulnerability announced in Mikrotik routers
Description: Well-known security researcher "kingcope" posted an announcement this week of a trivially-triggered, pre-authentication heap corruption vulnerability in the custom SSH daemon shipping with Mikrotik-branded routers, which have thrived as a low-cost alternative to better-known router brands. Systems can be crashed with a single line of Perl provided in the post; remote command execution is not provided at this time, but is likely in the future as other researchers take note of the bug. As no updates are available from the manufacturer at this time, users of impacted devices - which number over 290,000 according to popular device search engine Shodan - are urged to monitor their logs for any signs of suspicious activity, particularly since the fact that the attack occurs after the SSH stream has gone encrypted means that network-based detection will be limited at best.
Reference:
http://kingcope.wordpress.com/2013/09/02/mikrotik-routeros-5-and-6-sshd-remote-preauth-heap-corruption/
http://www.shodanhq.com/search?q=ROSSSH+port%3A22
Snort SID: N/A
ClamAV: N/A

Title: Malware authors capitalize on PRISM concerns
Description: In a move that many would consider surprising only in that it took so long to happen, malware authors have recently begun distributing "ransomware" - malware that promises to unlock a victim's system only they have paid the specified ransom - claiming that the infected user has been detected committing a computer crime by the NSA's PRISM apparatus. While current-event flavored malware is nothing new, this particular strain appears to be the among the first to capitalize on government surveillance concerns raised recently by Edward Snowden's document-leaking campaign.
Reference:
http://malware.dontneedcoffee.com/2013/08/prism-themed-ransomware.html
Snort SID: 27801 - 27804
ClamAV: Win.Trojan.PRISM

Title: Sophisticated Linux malware spotted in the wild
Description: A new backdoor for Linux systems, capable of data theft, update blocking, and with a full-featured command execution interface, has recently been spotted in the wild. While discovery is a straightforward process for system administrators searching for appropriate processes, infected systems have the potential to stay that way for longer than their Windows counterparts, as many Linux users do not expect to find malware on their desktops.
Reference:
http://blog.avast.com/2013/08/27/linux-trojan-hand-of-thief-ungloved/
Snort SID: 27746
ClamAV: Unix.Trojan.Hanthie

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USEFUL EXPLANATIONS OF HOW NEW ATTACKS WORK

Shady paths: Leveraging surfing crowds to detect malicious web pages:
http://cs.ucsb.edu/~gianluca/papers/redirections-ccs2013.pdf

Deobfuscating the CK exploit kit:
http://www.kahusecurity.com/2013/deobfuscating-the-ck-exploit-kit/

Anatomy of a dropped call - how to jam a city with 11 customized mobile phones:
http://nakedsecurity.sophos.com/2013/08/29/anatomy-of-a-dropped-call-how-to-jam-a-city-with-11-customised-mobile-phones/

Building a multiplatform shellcode header:
http://www.chokepoint.net/2013/09/building-multiplatform-shellcode-header.html

Heap spraying browsers using Adobe Flash's ActionScript:
http://www.greyhathacker.net/?p=717

Cybercrime-friendly underground traffic exchanges:
http://blog.webroot.com/2013/08/29/cybercrime-friendly-underground-traffic-exchanges-help-facilitate-fraudulent-and-malicious-activity-part-two/

Compiling payloads on the fly for PostgreSQL:
https://community.rapid7.com/community/metasploit/blog/2013/01/08/compiling-payloads-on-the-fly-for-postgresql

PE runtime structures:
http://uncomputable.blogspot.com/2013/08/pe-runtime-data-structures-v1.html

Visualization of a DDoS attack:
http://www.youtube.com/watch?v=hNjdBSoIa8k

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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-2013-2370
Title: HP LoadRunner Remote Code Execution
Vendor: HP
Description: Unspecified vulnerability in HP LoadRunner before 11.52 allows remote attackers to execute arbitrary code via unknown vectors, aka ZDI-CAN-1671.
CVSS v2 Base Score: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)

ID: CVE-2013-3763
Title: Oracle Endeca Server Remote Command Execution
Vendor: Oracle
Description: Unspecified vulnerability in the Oracle Endeca Server component in Oracle Fusion Middleware 7.4.0 and 7.5.1.1 allows remote authenticated users to affect confidentiality and integrity via unknown vectors, a different vulnerability than CVE-2013-3764.
CVSS v2 Base Score: 5.5 (AV:N/AC:L/Au:S/C:P/I:P/A:N)

ID: Not Available
Title: Joomla! Unauthorised Uploads
Vendor: Joomla!
Description: Inadequate filtering leads to the ability to bypass file type upload restrictions. Affects Joomla! version 2.5.13 and earlier 2.5.x versions; and version 3.1.4 and earlier 3.x versions.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2013-2465
Title: Java storeImageArray() Invalid Array Indexing Vulnerability
Vendor: Oracle
Description: Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier, 6 Update 45 and earlier, and 5.0 Update 45 and earlier, and OpenJDK 7, allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to 2D. NOTE: the previous information is from the June 2013 CPU. Oracle has not commented on claims from another vendor that this issue allows remote attackers to bypass the Java sandbox via vectors related to "Incorrect image channel verification" in 2D.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2013-2251
Title: Apache Struts 2 DefaultActionMapper Prefixes OGNL Code Execution
Vendor: Apache
Description: Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

ID: CVE-2013-2460
Title: Java Applet ProviderSkeleton Insecure Invoke Method
Vendor: Oracle
Description: Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 21 and earlier, and OpenJDK 7, allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Serviceability. NOTE: the previous information is from the June 2013 CPU. Oracle has not commented on claims from another vendor that this issue allows remote attackers to bypass the Java sandbox via vectors related to "insufficient access checks" in the tracing component.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

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MOST PREVALENT MALWARE FILES 8/27/2013 - 9/3/2013
COMPILED BY SOURCEFIRE

SHA 256: CB85D393C4E0DB5A1514C21F9C51BA4C12D82B7FABD9724616758AE528A5B16B
MD5: 7961a56c11ba303f20f6a59a506693ff
VirusTotal: https://www.virustotal.com/file/CB85D393C4E0DB5A1514C21F9C51BA4C12D82B7FABD9724616758AE528A5B16B/analysis/

Typical Filename: m3SrchMn
Claimed Product: m3SrchMn
Claimed Publisher: m3SrchMn

SHA 256: D14B66BD4C4C8F66A6EDF2820FD4162D09B326BEAF6A42014596571E81A1A503
MD5: 68b7f7a26b76805432e3d50009d2ab1f
VirusTotal: https://www.virustotal.com/file/D14B66BD4C4C8F66A6EDF2820FD4162D09B326BEAF6A42014596571E81A1A503/analysis/

Typical Filename: winmjtas.exe
Claimed Product: winmjtas.exe
Claimed Publisher: winmjtas.exe

SHA 256: E0B193D47609C9622AA018E81DA69C24B921F2BA682F3E18646A0D09EC63AC2B
MD5: bf31a8d79f704f488e3dbcb6eea3b3e3
VirusTotal: https://www.virustotal.com/file/E0B193D47609C9622AA018E81DA69C24B921F2BA682F3E18646A0D09EC63AC2B/analysis/

Typical Filename: mhjsm.sys
Claimed Product: mhjsm.sys
Claimed Publisher: mhjsm.sys

SHA 256: AA0BBAECB678868E1E7F57C7CA9D61B608B3D788BE490790EB1D148BEADF4615
MD5: 3291e1603715c47a23b60a8bf2ca73db
VirusTotal: https://www.virustotal.com/file/AA0BBAECB678868E1E7F57C7CA9D61B608B3D788BE490790EB1D148BEADF4615/analysis/

Typical Filename: 02.tmp
Claimed Product: 02.tmp
Claimed Publisher: 02.tmp

SHA 256: 144A9D9A35A2210FDAC2CA23660671C7C9A2905EA5A7EC9220ADC336A84BAF93
MD5: d2a67ee9141d02336760a11919891038
VirusTotal: https://www.virustotal.com/file/144A9D9A35A2210FDAC2CA23660671C7C9A2905EA5A7EC9220ADC336A84BAF93/analysis/

Typical Filename: BrowserDefender.dll
Claimed Product: BrowserDefender.dll
Claimed Publisher: BrowserDefender.dll

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