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@RISK Newsletter for May 28, 2015 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. 15, Num. 21

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
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 2015-05-19 - 2015-05-26


TOP VULNERABILITY THIS WEEK: CVE-2015-4000 - Protocol Flaw Could Allow

A Man-in-the-Middle Attacker To Downgrade TLS Connections During
Diffle-Hellman Key Exchange (a.k.a. Logjam)


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

Title: CVE-2015-4000 - Protocol Flaw Could Allow A Man-in-the-Middle
Attacker To Downgrade TLS Connections During Diffle-Hellman Key Exchange
(a.k.a. Logjam)
Description: A flaw in how the TLS Protocol handles a Diffie-Hellman key
exchange could allow a man-in-the-middle attacker to execute a downgrade
attack to DHE_EXPORT ciphers, which are weaker. As a result, the
attacker could possibly eavesdropped on client-server communications.
Servers that support DHE_EXPORT ciphers are primarily at risk and
administrators who are concerned should disable support for export grade
cipher suites.
Reference: https://weakdh.org/
Snort SID: 33777-33806

Title: CVE-2015-2851 - Synology Cloud Station Sync Client for Mac OS X
Could Allow Users to Change Ownership of System Files
Description: Researchers have found that the Synology Cloud Station
Client for Mac OS X comes with an executable that allows users to change
ownership of files, but is installed as a setuid root executable. This
could allow a user to change ownership of system files and compromise
the host. Synology has released updates for the client that remove the
executable in order to prevent abuse and address the issue.
Reference: https://www.kb.cert.org/vuls/id/551972


INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

IRS hit by data breach, tax info on 100,000 stolen
http://www.zdnet.com/article/irs-suffers-data-breach-tax-info-on-100000-stolen/

Security Monitoring with Attack Behavior Based Signatures
http://journeyintoir.blogspot.com/2015/05/security-monitoring-with-attack.html

Exploring CVE-2015-1701 - A Win32k Elevation of Privilege Vulnerability
Used in Targeted Attacks
http://blog.trendmicro.com/trendlabs-security-intelligence/exploring-cve-2015-1701-a-win32k-elevation-of-privilege-vulnerability-used-in-targeted-attacks/

Exploit Kit Leveraging Cross Site Request Forgery to Modify SOHO Router
DNS Configurations
http://malware.dontneedcoffee.com/2015/05/an-exploit-kit-dedicated-to-csrf.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-2015-3306
Title: ProFTPd 1.3.5 Remote Command Execution
Vendor: proftpd.org
Description: The mod_copy module in ProFTPD 1.3.5 allows remote
attackers to read and write to arbitrary files via the site cpfr and
site cpto commands.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2015-1701
Title: Microsoft Windows Privilege Escalation Vulnerability
Vendor: Microsoft
Description: Unspecified vulnerability in Microsoft Windows before 8
allows local users to gain privileges via unknown vectors, as exploited
in the wild in April 2015.
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2015-3043
Title: Adobe Flash Player Memory Corruption Code Execution Vulnerability
Vendor: Adobe
Description: Adobe Flash Player before 13.0.0.281 and 14.x through 17.x
before 17.0.0.169 on Windows and OS X and before 11.2.202.457 on Linux
allows attackers to execute arbitrary code or cause a denial of service
(memory corruption) via unspecified vectors, as exploited in the wild
in April 2015, a different vulnerability than CVE-2015-0347,
CVE-2015-0350, CVE-2015-0352, CVE-2015-0353, CVE-2015-0354,
CVE-2015-0355, CVE-2015-0360, CVE-2015-3038, CVE-2015-3041, and
CVE-2015-3042.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2014-0556
Title: Adobe Flash Player copyPixelsToByteArray Buffer Overflow
Vendor: Adobe
Description: Heap-based buffer overflow in Adobe Flash Player before
13.0.0.244 and 14.x and 15.x before 15.0.0.152 on Windows and OS X and
before 11.2.202.406 on Linux, Adobe AIR before 15.0.0.249 on Windows and
OS X and before 15.0.0.252 on Android, Adobe AIR SDK before 15.0.0.249,
and Adobe AIR SDK & Compiler before 15.0.0.249 allows attackers to
execute arbitrary code via unspecified vectors, a different
vulnerability than CVE-2014-0559.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2015-0313
Title: Adobe Flash Player Use-After-Free Vulnerability
Vendor: Adobe
Description: Use-after-free vulnerability in Adobe Flash Player before
13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows and OS X
and before 11.2.202.442 on Linux allows remote attackers to execute
arbitrary code via unspecified vectors, as exploited in the wild in
February 2015, a different vulnerability than CVE-2015-0315,
CVE-2015-0320, and CVE-2015-0322.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2015-0235
Title: Exim GHOST (glibc gethostbyname) Buffer Overflow
Vendor: Exim.org
Description: Heap-based buffer overflow in the
__nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions
before 2.18, allows context-dependent attackers to execute arbitrary
code via vectors related to the (1) gethostbyname or (2) gethostbyname2
function, aka “GHOST.”
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)


MOST PREVALENT MALWARE FILES 2015-05-19 - 2015-05-26 COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

SHA 256: 55F173FB7CE33654D379663215DE48BD2F13CA4A607CBE4D90962DE33A4972E6
MD5: 1caf9472c70fb3567b85e1977a393720
VirusTotal:
https://www.virustotal.com/file/55F173FB7CE33654D379663215DE48BD2F13CA4A607CBE4D90962DE33A4972E6/analysis/#additional-info
Typical Filename: Runner.exe
Claimed Product: Search Protect
Detection Name: W32.SearchProtect:GenMaliciousAIBH.18f2.1201

SHA 256: B4F697039563BF0A6DF19E33A62C601B275FA869E5D80F610E8D74722B839554
MD5: c4dd3d60af182429d1262f5992e2dce1
VirusTotal:
https://www.virustotal.com/file/B4F697039563BF0A6DF19E33A62C601B275FA869E5D80F610E8D74722B839554/analysis/#additional-info
Typical Filename: newVrsn.exe
Claimed Product: Keep-My-Search LTD
Detection Name: W32.Variant:Gen.18fe.1201

SHA 256: EE3D776A5DA74C00FAD15A1B50E42C091CEC6A9A89C13428F9277C6007D4007F
MD5: a3730e445244791b37af42763603d87f
VirusTotal:
https://www.virustotal.com/file/EE3D776A5DA74C00FAD15A1B50E42C091CEC6A9A89C13428F9277C6007D4007F/analysis/#additional-info
Typical Filename: iKernel.dll
Claimed Product: InstallShield
Detection Name: W32.EE3D776A5D-100.SBX.VIOC

SHA 256: 78A9588D7EAF6917A67E86046DCE1614A182990A3D2FC65991CB42FC56A18EC2
MD5: 55504695641a1b11d923a29cd320c5f4
VirusTotal:
https://www.virustotal.com/file/78A9588D7EAF6917A67E86046DCE1614A182990A3D2FC65991CB42FC56A18EC2/analysis/#additional-info
Typical Filename: PM8963.doc
Detection Name: W32.78A9588D7E-99.SBX.VIOC

SHA 256: 7314C47AA633946386D6D3CD7AC292974B5D457E14B053FA0EBC218D555C34F4
MD5: 9f6c52eec607111136cd222b02bf0530
VirusTotal:
https://www.virustotal.com/file/7314C47AA633946386D6D3CD7AC292974B5D457E14B053FA0EBC218D555C34F4/analysis/#additional-info
Typical Filename: DoiSScountExtensi.exe
Detection Name: W32.Variant:VOPackage.18gr.1201


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