Exostats/Exoscan |
Nombre de tests inclus
|
29036
|
|
Tests ajoutés |
Aujourd'hui |
Ce
mois |
7 |
26 |
|
|
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[SA23189] TWiki Authentication Bypass Vulnerability
To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.
The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.
This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links
Read the full description:
link://[click]
Contact Secunia Sales for more information:
link://[click]
TITLE:
TWiki Authentication Bypass Vulnerability
SECUNIA ADVISORY ID:
SA23189
VERIFY ADVISORY:
link://[click]
CRITICAL:
Moderately critical
IMPACT:
Security Bypass, Exposure of sensitive information
WHERE:
From remote
SOFTWARE:
TWiki
link://[click]
DESCRIPTION:
A vulnerability has been reported in TWiki, which can be exploited by
malicious people to disclose certain sensitive information.
The vulnerability exists due to an error when handling failed login
attempts. This can be exploited to bypass authentication and view
content in access restricted topics by canceling a login attempt with
a valid user name.
Successful exploitation requires that "ErrorDocument 401" is set to a
TWiki topic, that ApacheLogin with TWiki-4.0 is used with sessions
enabled or SessionPlugin is used for older versions, and TWiki is
running on Apache 1.3.
The vulnerability is reported in versions TWikiRelease01Sep2004
through TWikiRelease04Sep2004 with SessionPlugin, and 4.0.0 through
4.0.5.
SOLUTION:
Restrict access to the TWiki installation.
As a hotfix the vendor recommends to change the "ErrorDocument" line
in httpd.conf or .htaccess, which prevents current attacks, but might
not be a complete fix (see vendor advisory for details).
PROVIDED AND/OR DISCOVERED BY:
The vendor credits George Clark.
ORIGINAL ADVISORY:
link://[click]
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
link://[click]
Definitions: (Criticality, Where etc.)
link://[click]
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
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