Vulnerabilities / Threats
11/5/2009
12:48 PM
Connect Directly
LinkedIn
Twitter
Google+
RSS
E-Mail
50%
50%

Serious SSL Vulnerability Found

A vulnerability in the most common data security protocol on the Internet could allow secure Web sessions to be hijacked.

Two security researchers with PhoneFactor, a provider of phone-based two-factor authentication, on Thursday said that they had discovered a serious flaw in the SSL protocol, which is used to protect sensitive data in online transactions.

SSL, short for Secure Sockets Layer, is used for online banking and for secure e-mail and database access, among other things.

Discovered in August and disclosed by PhoneFactor researchers Marsh Ray and Steve Dispensa to a consortium of major tech industry companies and standards groups in September, the vulnerability was slated for disclosure next year, to give affected vendors time to patch their software.

But an independent security researcher discovered the vulnerability on his own and posted it to an Internet Engineering Task Force mailing list on November 4th.

The vulnerability could allow an attack to conduct a man-in-the-middle attack, whereby he or she could hijack an authenticated SSL session and execute commands. In theory, neither the Web server nor Web browser would provide any indication that the session had been subverted.

"Because this is a protocol vulnerability, and not merely an implementation flaw, the impacts are far-reaching," said Steve Dispensa, CTO of PhoneFactor, in a statement. "All SSL libraries will need to be patched, and most client and server applications will, at a minimum, need to include new copies of SSL libraries in their products. Most users will eventually need to update any software that uses SSL."

Other SSL vulnerabilities have been identified recently. Over the summer, at the Black Hat security conference in Las Vegas, Mike Zusman, principal consultant at Intrepidus Group, and Alex Sotirov, an independent security researcher, disclosed a Web browser design flaw that allowed an attacker to conduct a a man-in-the-middle attack against Web sites with Extended Validation (EV) Secure Sockets Layer (SSL) certificates.

Another security researcher, Moxie Marlinspike, demonstrated a separate SSL flaw at the Black Hat conference in Washington, D.C., in February.

InformationWeek and Dr. Dobb's have published an in-depth report on how Web application development is moving to online platforms. Download the report here (registration required).

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Cartoon
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2012-4988
Published: 2014-07-09
Heap-based buffer overflow in the xjpegls.dll (aka JLS, JPEG-LS, or JPEG lossless) format plugin in XnView 1.99 and 1.99.1 allows remote attackers to execute arbitrary code via a crafted JLS image file.

CVE-2014-0207
Published: 2014-07-09
The cdf_read_short_sector function in cdf.c in file before 5.19, as used in the Fileinfo component in PHP before 5.4.30 and 5.5.x before 5.5.14, allows remote attackers to cause a denial of service (assertion failure and application exit) via a crafted CDF file.

CVE-2014-0537
Published: 2014-07-09
Adobe Flash Player before 13.0.0.231 and 14.x before 14.0.0.145 on Windows and OS X and before 11.2.202.394 on Linux, Adobe AIR before 14.0.0.137 on Android, Adobe AIR SDK before 14.0.0.137, and Adobe AIR SDK & Compiler before 14.0.0.137 allow attackers to bypass intended access restrictions via uns...

CVE-2014-0539
Published: 2014-07-09
Adobe Flash Player before 13.0.0.231 and 14.x before 14.0.0.145 on Windows and OS X and before 11.2.202.394 on Linux, Adobe AIR before 14.0.0.137 on Android, Adobe AIR SDK before 14.0.0.137, and Adobe AIR SDK & Compiler before 14.0.0.137 allow attackers to bypass intended access restrictions via uns...

CVE-2014-3309
Published: 2014-07-09
The NTP implementation in Cisco IOS and IOS XE does not properly support use of the access-group command for a "deny all" configuration, which allows remote attackers to bypass intended restrictions on time synchronization via a standard query, aka Bug ID CSCuj66318.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Marilyn Cohodas and her guests look at the evolving nature of the relationship between CIO and CSO.