|
Squid NTLM Authentication Denial of Service Vulnerability
|
|
Secunia Advisory:
|
SA12444
|
|
|
Release Date:
|
2004-09-03
|
|
Last Update:
|
2004-09-15
|
|
Popularity:
|
10,164 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
DoS
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Squid 2.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2004-0832
|
|
Description:
Marco Ortisi has reported a vulnerability in Squid, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to insufficient validation of negative values in the function "ntlm_fetch_string()" in "lib/ntlmauth.c". This can be exploited by sending a specially crafted NTLMSSP packet, which can cause the NTLM helpers provided by Squid to crash.
Successful exploitation requires that NTLM authentication is enabled.
The vulnerability has been reported in version 2.5.
Solution:
Apply patch for version 2.5:
http://www1.uk.squid-cache.org/squid/...d-2.5.STABLE6-ntlm_fetch_string.patch
Provided and/or discovered by:
Marco Ortisi
Changelog:
2004-09-15: Added CVE reference.
Original Advisory:
http://www.squid-cache.org/bugs/show_bug.cgi?id=1045
http://www1.uk.squid-cache.org/squid/.../#squid-2.5.STABLE6-ntlm_fetch_string
|
|
|
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.
|
