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@RISK Newsletter for April 04, 2013 The Consensus Security Vulnerability Alert

This is a weekly newsletter that provides in-depth analysis of the latest vulnerabilities with straightforward remediation advice. Qualys supplies a large part of the newly-discovered vulnerability content used in this newsletter.


@RISK: The Consensus Security Vulnerability Alert
Vol. 13, Num. 14

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 https://www.qualys.com/research/sans-at-risk/


CONTENTS:

NOTABLE RECENT SECURITY ISSUES
USEFUL EXPLANATIONS OF HOW NEW ATTACKS WORK
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 3/28/2013 - 4/4/2013


TOP VULNERABILITY THIS WEEK: A recently disclosed vulnerability in ISC

BIND impacts a variety of Linux-based systems using glibc, which can be
killed by feeding them a particularly complex regular expression. Server
administrators should patch the vulnerability immediately, before
exploitation in the wild - which is likely based on the ease of crafting
an attack - begins in earnest.


NOTABLE RECENT SECURITY ISSUES SELECTED BY THE SOURCEFIRE VULNERABILITY RESEARCH TEAM

Title: ISC BIND Regular Expression Denial of Service
Description: A trivially exploitable denial of service was announced in
ISC BIND last week. The issue - which revolves around complex regular
expressions, and which to date is not being exploited in mass campaigns
on the Internet - actually stems from a glibc regular expression issue,
and caused ISC to create their own regular expression validation
functionality in the patch released for the bug (internal testing within
the VRT has shown that expressions which crash BIND can crash Linux
systems from the command line). Administrators should apply this patch
immediately, before attackers begin targeting servers in the wild.
Reference:
http://www.isc.org/software/bind/advisories/cve-2013-2266
Snort SID: 26324
ClamAV: N/A

Title: North Korean MBR wiper targeted Linux, UNIX systems
Description: In addition to contributing to tensions between North and
South Korea, the MBR wiper attacks that recently targeted high-profile
systems in the South were interesting from a purely technical
standpoint, in that they included generic payloads for Linux and UNIX
systems. While attackers have recently begun spending more time
targeting OS X and Android systems, Linux servers and other critical
infrastructure targets have to date remained largely safe from mass
malware attacks; this trojan could signal a reversal of that trend.
Reference:
http://blog.trendmicro.com/trendlabs-security-intelligence/three-lessons-from-the-south-korea-mbr-wiper-attacks/
http://www.virustotal.com/en/file/ 510f83af3c41f9892040a8a80b4f3a4736eebee2ec4a7d4bfee63dbe44d7ecff/analysis/
Snort SID: 26326
ClamAV: Win.Trojan.Agent-257543

Title: Telephony Denial of Service on emergency responders
Description: The United States federal government is warning emergency
responders about a new telephony-based denial of service attack which
is currently being used to attempt to extort blackmail money from
agencies across the country. Non-emergency lines are being flooded with
calls, to the point that responders are not able to receive inbound
calls from the public they serve. Potentially impacted agencies are
urged to immediately contact the FBI if an attack occurs.
Reference:
http://krebsonsecurity.com/2013/04/dhs-warns-of-tdos-extortion-attacks-on-public-emergency-networks/
Snort SID: N/A
ClamAV: N/A

Title: Mysterious attack targets Apache servers, drops exploit kits
Description: A campaign dubbed “Darkleech” has been quietly using
unknown vectors - likely involving Cpanel, Plesk, or other Apache-based
system administration tools - to drop exploit kits on tens of thousands
of servers recently. The campaign - which can be tracked with the
URLQuery link below - is slipping below the radar of many
administrators, with a hidden iframe delivering the malicious content
on unsuspecting users. As noted by the URLQuery site, these exploit kits
can be reliably detected at the IDS level with the Sourcefire VRT’s
Exploit-Kit rules category (clicking any individual link will give a
breakdown on events generated when fetching a live copy of the page).
Reference:
http://arstechnica.com/security/2013/04/exclusive-ongoing-malware-attack-targeting-apache-hijacks-20000-sites/
http://urlquery.net/report.php?id=1436031
Snort SID: EXPLOIT-KIT category (hundreds of rules)
ClamAV: N/A

Title: New malware uses Evernote server for C&C communications
Description: Researchers at Trend Micro last week discovered a piece of
malware, dubbed “Vernot”, which bases C&C communications around a
request to a Chinese slice of the Evernote service. This novel method
illustrates just how easy it is for creative attackers to obfuscate C&C
channels, and how proper network defense revolves around monitoring any
abnormal activity. Network administrators whose systems do not contact
Evernote or Chinese systems as part of legitimate business are urged to
block the URL highlighted in the Trend Micro report below.
Reference:
http://blog.trendmicro.com/trendlabs-security-intelligence/backdoor-uses-evernote-as-command-and-control-server/
Snort SID: 26328
ClamAV: Win.Trojan.Vernot


USEFUL EXPLANATIONS OF HOW NEW ATTACKS WORK

A peek inside the EgyPack web malware exploitation kit:
http://blog.webroot.com/2013/03/29/a-peek-inside-the-egypack-web-malware-exploitation-kit/

APKScan beta released:
http://blog.nviso.be/2013/03/apkscan-beta-released.html

Parsing binary file formats with PowerShell:
http://packetstormsecurity.com/files/121014

Introducing ThreatAgent Exfiltrate:
http://blog.threatagent.com/2013/03/introducing-threatagent-exfiltrate.html

Dumpmon: a Twitter bot that monitors paste sites for interesting info:
http://raidersec.blogspot.com/2013/03/introducing-dumpmon-twitter-bot-that.html

vSkimmer botnet targets payment terminals:
https://blogs.mcafee.com/mcafee-labs/vskimmer-botnet-targets-credit-card-payment-terminals

Nerd programmer discovers this weird old trick for discovering heap addresses!
https://github.com/justdionysus/gcwoah

Known bad Tor exit nodes:
https://trac.torproject.org/projects/tor/wiki/doc/badRelays

Jamming with WordPress sessions:
http://blog.spiderlabs.com/2013/04/jamming-with-wordpress-sessions.html


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-2012-5879
Title: McAfee Virtual Technician ActiveX Control Insecure Method
Vendor: McAfee
Description: An ActiveX control in McHealthCheck.dll in McAfee Virtual
Technician (MVT) and ePO-MVT 6.5.0.2101 and earlier allows remote
attackers to modify or create arbitrary files via a full pathname
argument to the Save method.
CVSS v2 Base Score: 8.2 (AV:N/AC:M/Au:S/C:C/I:C/A:P)

ID: CVE-2012-4711
Title: KingView Log File Parsing Buffer Overflow
Vendor: WellinTech
Description: Buffer overflow in kingMess.exe 65.20.2003.10300 in
WellinTech KingView 6.52, kingMess.exe 65.20.2003.10400 in KingView
6.53, and kingMess.exe 65.50.2011.18049 in KingView 6.55 allows remote
attackers to execute arbitrary code or cause a denial of service (memory
corruption) via a crafted packet.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2012-3001
Title: Mutiny Remote Command Execution
Vendor: Mutiny Technology
Description: Mutiny Standard before 4.5-1.12 allows remote attackers to
execute arbitrary commands via the network-interface menu, related to a
“command injection vulnerability.”
CVSS v2 Base Score: 8.5 (AV:N/AC:M/Au:S/C:C/I:C/A:C)

ID: CVE-2013-1288
Title: Microsoft Internet Explorer CTreeNode Use After Free Vulnerability (MS13-021)
Vendor: Microsoft
Description: Use-after-free vulnerability in Microsoft Internet Explorer
allows remote attackers to execute arbitrary code via a crafted web
site, aka “CTreeNode Use After Free Vulnerability.”
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

ID: CVE-2013-1493
Title: Oracle Java SE JVM 2D Subcomponent Remote Code Execution
Vulnerability (Oracle Security Alert for CVE-2013-1493)
Vendor: Oracle
Description: The color management (CMM) functionality in the 2D
component in Oracle Java SE 7 Update 15 and earlier, 6 Update 41 and
earlier, and 5.0 Update 40 and earlier allows remote attackers to
execute arbitrary code or cause a denial of service (crash) via an image
with crafted raster parameters, which triggers (1) an out-of-bounds read
or (2) memory corruption in the JVM, as exploited in the wild in
February 2013.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)


MOST PREVALENT MALWARE FILES 3/28/2013 - 4/4/2013 COMPILED BY SOURCEFIRE

SHA 256: 9ade68f592217900f364742f553b1b177ea2cce8d365e00560230db49e386fcf
MD5: 765197626e862524cd850a49baec7031
VirusTotal: https://www.virustotal.com/file/9ade68f592217900f364742f553b1b177ea2cce8d365e00560230db49e386fcf/analysis/
Typical Filename: jf_cf_frostovip.exe
Claimed Product: JF_CF_MiniZM
Claimed Publisher: www.crazyfrost.com

SHA 256: 636fec0f9f19f56f082ad5558aed5e6c323fb44e573e0f94d0d1a1eb3cea7041
MD5: 07fd6e250058a78bcf4d9fa65dee03ab
VirusTotal: https://www.virustotal.com/file/636fec0f9f19f56f082ad5558aed5e6c323fb44e573e0f94d0d1a1eb3cea7041/analysis/
Typical Filename: jf_1hitcf.exe
Claimed Product: JF_CF_MiniZM
Claimed Publisher: www.crazyfrost.com

SHA 256: bcc6188203e7b42073209f9356aa15598f61151217eb25dbd869db0e5b99b0c9
MD5: efac97460bd2e8fad7f5118bc4020fdc
VirusTotal: https://www.virustotal.com/file/bcc6188203e7b42073209f9356aa15598f61151217eb25dbd869db0e5b99b0c9/analysis/
Typical Filename: D3D Damag CF v11.8.exe
Claimed Product: -
Claimed Publisher: -

SHA 256: a316c76591ec14102164ef345cd2bd61a8a455724cfcd1591b1fe1d50543ad25
MD5: 7a402a1cf3be24a2eb97e79973df91e7
VirusTotal: https://www.virustotal.com/file/a316c76591ec14102164ef345cd2bd61a8a455724cfcd1591b1fe1d50543ad25/analysis/
Typical Filename: 9DF.exe
Claimed Product: -
Claimed Publisher: -

SHA 256: fe1e4987cd97c1198da240aa490e94c4def8db61b95815d1379220fd7bed603a
MD5: 595f95f3b1f54d51a179d60804184ceb
VirusTotal: https://www.virustotal.com/file/fe1e4987cd97c1198da240aa490e94c4def8db61b95815d1379220fd7bed603a/analysis/
Typical Filename: jf_1hitcf.exe
Claimed Product: -
Claimed Publisher: -


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