3693.txt

snort入侵检测规则文件2.4 Snort是众所周知的网络入侵检测工具

Rule:

--
Sid:
3694

--
Summary:
This event is generated when an attempt is made to exploit a
buffer overflow associated with the IBM WebSphere Application
Server mishandling of authentication variable values.

--
Impact:
A successful attack can cause a buffer overflow on a vulnerable
IBM WebSphere server, permitting the execution of arbitrary
code on the vulnerable server.

--
Detailed Information:
IBM WebSphere may use form-based authentication to permit access
to applications.  The CGI variables j_username and j_password
are used for this authentication process.  Overly long values
passed to these variables can cause a buffer overflow and the
subsequent execution of arbitrary code on the vulnerable server.
This is due to a failure in the code to accommodate wide-character
expansion for the receiving buffer.

--
Affected Systems:
IBM WebSphere Application Server 5.0 through 5.0.2 without
Cumulative Fix 11

--
Attack Scenarios:
An attacker can send a malformed request that contains an overly
long value for a vulnerable authentication variable.

--
Ease of Attack:
Simple.

--
False Positives:
None known.

--
False Negatives:
None known.

--
Corrective Action:
Upgrade to the most current non-affected version of the product.

--
Contributors:
Sourcefire Vulnerability Research Team
Judy Novak <[e-mail]>

--
Additional References
Other:

--