Hello Serg, thanks for worrying.
Actually you're mixing Stefan Esser's statements (go back to his post).
We are working on the upcoming CORE GRASP version which will solve:
- A false positive due to doubly escaped quotes inside our sql FSM.
- Wrong handling of the _SERVER superglobal.
- Log injection of control characters.
We are also working on the performance and plan to release a revised
version lowering the run-time penalty soon.
That release will also include RegEx mark propagation.
Again, thanks for worrying.
Ezequiel
Serg B. wrote:
> FYI:
>
> http://blog.php-security.org/archives/92-CORE-GRASP-PHP-Tainted-Mode.html
>
> "Unfortunately, Stefan also mentions two big issues it might have from
> the get-go: the overhead for the memory needed can slow things down
> and an incorrect parsing in their query handler could lead to
> injection attacks."
>
>
>
> Serg
>
> On 23/08/07, Ezequiel Gutesman <egutesman_at_coresecurity.com> wrote:
>
>> CORE GRASP for PHP is a web-application protection software aimed at
>> detecting and blocking injection vulnerabilities and privacy violations.
>> As mentioned during its presentation at Black Hat USA 2007, GRASP is
>> being released as open source under the Apache 2.0 license and can be
>> obtained from http://gasp.coresecurity.com/.
>>
>> The present implementation protects PHP 5.2.3 against SQL-injection
>> attacks for the MySQL engine, it can be installed with almost the same
>> effort as the PHP engine, both in Unix and Windows systems, and
>> protection is immediate with any PHP web application running in the
>> protected server.
>>
>> CORE GRASP works by enhancing the PHP execution engine (VM) to permit
>> byte-level taint tracking and analysis for all the user-controlled or
>> otherwise untrustable variables of the web application. Tainted bytes
>> are then tracked and their taint marks propagated throughout the web
>> application's runtime. Whenever the web application tries to interact
>> with an DB backend using SQL statements that contain tainted bytes,
>> GRASP analyzes the statment and detects and prevents attacks or abnormal
>> actions.
>>
>> CORE GRASP was developed by CoreLabs, the research unit of Core Security
>> Technologies. At CoreLabs, we plan to improve the tool and include new
>> protections shortly. However, the invitation to collaborate with the
>> project is open. If you would like to collaborate, please go to the
>> GRASP website and subscribe to our mailing list.
>>
>> Project home: http://grasp.coresecurity.com/
>> Documentation, presentation and papers:
>> http://grasp.coresecurity.com/index.php?m=doc
>> Download: http://grasp.coresecurity.com/index.php?m=dld
>>
>>
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Received on Aug 29 2007
Intro
