@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
@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.=============================================================
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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NOTABLE RECENT SECURITY ISSUES
SELECTED BY THE SOURCEFIRE VULNERABILITY RESEARCH TEAM
Title: Intel microcode update fixes potential DoS for huge array of
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.
Snort SID: 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.
Snort SID: 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.
Snort SID: 27801 - 27804
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.
Snort SID: 27746
Shady paths: Leveraging surfing crowds to detect malicious web pages:
Deobfuscating the CK exploit kit:
Anatomy of a dropped call - how to jam a city with 11 customized mobile phones:
Building a multiplatform shellcode header:
Heap spraying browsers using Adobe Flash's ActionScript:
Cybercrime-friendly underground traffic exchanges:
Compiling payloads on the fly for PostgreSQL:
PE runtime structures:
Visualization of a DDoS attack:
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.
Title: HP LoadRunner Remote Code Execution
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)
Title: Oracle Endeca Server Remote Command Execution
Description: Unspecified vulnerability in the Oracle Endeca Server component in Oracle Fusion Middleware 7.4.0 and 188.8.131.52 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
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)
Title: Java storeImageArray() Invalid Array Indexing Vulnerability
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)
Title: Apache Struts 2 DefaultActionMapper Prefixes OGNL Code Execution
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)
Title: Java Applet ProviderSkeleton Insecure Invoke Method
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)
SHA 256: CB85D393C4E0DB5A1514C21F9C51BA4C12D82B7FABD9724616758AE528A5B16B
Typical Filename: m3SrchMn
Claimed Product: m3SrchMn
Claimed Publisher: m3SrchMn
SHA 256: D14B66BD4C4C8F66A6EDF2820FD4162D09B326BEAF6A42014596571E81A1A503
Typical Filename: winmjtas.exe
Claimed Product: winmjtas.exe
Claimed Publisher: winmjtas.exe
SHA 256: E0B193D47609C9622AA018E81DA69C24B921F2BA682F3E18646A0D09EC63AC2B
Typical Filename: mhjsm.sys
Claimed Product: mhjsm.sys
Claimed Publisher: mhjsm.sys
SHA 256: AA0BBAECB678868E1E7F57C7CA9D61B608B3D788BE490790EB1D148BEADF4615
Typical Filename: 02.tmp
Claimed Product: 02.tmp
Claimed Publisher: 02.tmp
SHA 256: 144A9D9A35A2210FDAC2CA23660671C7C9A2905EA5A7EC9220ADC336A84BAF93
Typical Filename: BrowserDefender.dll
Claimed Product: BrowserDefender.dll
Claimed Publisher: BrowserDefender.dll
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