PBLang Input Validation Holes in 'search.php', 'pmshow.php' and 'pm.php' Permit Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1013277 |
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SecurityTracker URL: http://securitytracker.com/id/1013277
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Feb 23 2005
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Impact:
Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Exploit Included: Yes
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Version(s): 4.65
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Description:
Several vulnerabilities were reported in PBLang. A remote user can conduct cross-site scripting attacks.
The 'search.php' script does not properly validate user-supplied input to remove HTML code. A remote user can create specially crafted input that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the PBLang software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Private messages processed by the 'pmpshow.php' script are also affected.
The subject field in 'pm.php' is also affected.
The vendor has been notified.
Raven from Hackerlounge Research Group reported these vulnerabilities.
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Impact:
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the PBLang software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
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Solution:
No solution was available at the time of this entry.
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Vendor URL: pblang.drmartinus.de/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Message History:
None.
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Source Message Contents
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Subject: Software PBLang 4.65 search.php XSS vulnerability
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[] HRG - Hackerlounge Research Group
[] Release: HRG001
[] Friday 11-02-05
[] Software PBLang 4.65 search.php XSS vulnerability
[]
[] The author can't be held responsible for any
damage
[] done by a reader. You have your own resonsibility
[] Please use this document like it's meant to.
[]
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Vulnerable: PBLang 4.65 (current) (and earlier?)
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General information:
PBLang is an international BBS-software based on
PHP. It does not require any database but bases on a
flatfile system. Many professional features. More
info on the project website.
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Description:
The search.php script is vulnerable to a XSS attack
by a remote attacker. The searched string is not
filtered for any harmfull characters like < > and ".
This makes it possible for an attacker to trick a
user into going to a harmfull page and stealing a
session.
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Proof Of Concept:
Type in the search box "<script
language="javascript">alert("Hackerlounge.com pwns
joo");</script>" and submit. An alertbox with the
text "Hackerlounge.com pwns joo" should come up.
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Fix and Vendor status:
The vendor has been notified, expect an official
patch soon.
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Credit:
HRG (Hackerlounge Research Group).
Hackerlounge.com
TGS-Security.com
[][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]
[]
[] HRG - Hackerlounge Research Group
[] Release: HRG001
[] Friday 11-02-05
[] Software PBLang 4.65 search.php XSS vulnerability
[]
[] The author can't be held responsible for any
damage
[] done by a reader. You have your own resonsibility
[] Please use this document like it's meant to.
[]
[][][][][][][][][][][][][][][][][][][][][][][][][][]
[][][]
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