|
Link Grammar "separate_sentence()" Buffer Overflow
|
|
Secunia Advisory:
|
SA27300
|
|
|
Release Date:
|
2007-11-07
|
|
Popularity:
|
2,856 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
System access
|
|
Where:
|
From remote
|
|
Solution Status:
|
Unpatched
|
|
| Software: | Link Grammar 4.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2007-5395
|
|
Description:
Secunia Research has discovered a vulnerability in Link Grammar, which can be exploited by malicious people to compromise an application using the affected code.
The vulnerability is caused due to a boundary error within the "separate_word()" function in tokenize.c when processing overly long words (over 61 bytes). This can be exploited to cause a stack-based buffer overflow via a specially crafted sentence passed to the "separate_sentence()" function.
Successful exploitation allows execution of arbitrary code.
The vulnerability is confirmed in version 4.1b. Other versions may also be affected.
Solution:
Do not parse untrusted text using the affected function.
Provided and/or discovered by:
Alin Rad Pop, Secunia Research
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-78/
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
