CA 2E Web Option 8.1.2 Privilege Escalation / Denial Of Service

2014-02-13T00:00:00
ID PACKETSTORM:125193
Type packetstorm
Reporter Mike Emery
Modified 2014-02-13T00:00:00

Description

                                        
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Vulnerability title: Unauthenticated Privilege Escalation in CA 2E Web  
Option  
  
CVE: CVE-2014-1219  
Vendor: CA  
Product: 2E Web Option  
Affected version: 8.1.2  
Fixed version: N/A  
Reported by: Mike Emery  
  
Details:  
  
=20 CA 2E Web Option (r8.1.2) and potentially others, is vulnerable=  
  
to unauthenticated privilege escalation via a predictable session token.  
The POST parameter session token W2E_SSNID appears as follows:  
  
W2E_SSNID=3DW90NIxGoSsN1023ZYW2E735182000013CLSpKfgkCJSLKsc600061JKenjKnE=  
D  
JuNX9GoVjCEbqIuKh6kFRvbzYnUxgQtONszJldyAar3LtTSwsmBLpdlPc5iDH4Zf75  
  
  
=20 However, this token is poorly validated, leading to  
  
W2E_SSNID=3DW90NIxGoSsN1023ZYW2E735182000013  
  
=20 being accepted as a valid session. By incrementing and  
decrementing the digits at the end of the value given above, it is  
possible to control the session at the given ID. This token is sent as  
part of the login page, and as such, can be manipulated by an  
unauthenticated attacker, giving them access to any valid session.  
Consequentially, it is possible to access the following page as such:  
  
https://app.domain.co.uk/web2edoc/close.htm?SSNID=3DW90NIxGoSsN1023ZYW2E7=  
3  
5182000026  
  
=20 Ending the session specified, which could lead to a denial of  
service condition.  
  
  
=20 =20  
Further details at:=20  
http://portcullis-security.com/security-research-and-downloads/security-  
advisories/cve-2014-1219/  
  
  
Copyright:  
Copyright (c) Portcullis Computer Security Limited 2014, All rights  
reserved worldwide. Permission is hereby granted for the electronic  
redistribution of this information. It is not to be edited or altered in  
any way without the express written consent of Portcullis Computer  
Security Limited.  
  
Disclaimer:  
The information herein contained may change without notice. Use of this  
information constitutes acceptance for use in an AS IS condition. There  
are NO warranties, implied or otherwise, with regard to this information  
or its use. Any use of this information is at the user's risk. In no  
event shall the author/distributor (Portcullis Computer Security  
Limited) be held liable for any damages whatsoever arising out of or in  
connection with the use or spread of this information.  
  
  
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taken in reliance on it, is prohibited and may be unlawful.=20  
When addressed to our clients any opinions or advice=20  
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<P><FONT size=3D2>Vulnerability title: Unauthenticated Privilege Escalati=  
on in CA=20  
2E Web Option<BR><BR>CVE: CVE-2014-1219<BR>Vendor: CA<BR>Product: 2E Web =  
  
Option<BR>Affected version: 8.1.2<BR>Fixed version: N/A<BR>Reported by: M=  
ike=20  
Emery<BR><BR>Details:<BR><BR>        C=  
A 2E=20  
Web Option (r8.1.2) and potentially others, is vulnerable to unauthentica=  
ted=20  
privilege escalation via a predictable session token. The POST parameter =  
session=20  
token W2E_SSNID appears as=20  
follows:<BR><BR>W2E_SSNID=3DW90NIxGoSsN1023ZYW2E735182000013CLSpKfgkCJSLK=  
sc600061JKenjKnEDJuNX9GoVjCEbqIuKh6kFRvbzYnUxgQtONszJldyAar3LtTSwsmBLpdlP=  
c5iDH4Zf75<BR><BR><BR>       =20  
However, this token is poorly validated, leading=20  
to<BR><BR>W2E_SSNID=3DW90NIxGoSsN1023ZYW2E735182000013<BR><BR> &nbsp=  
;     =20  
being accepted as a valid session. By incrementing and decrementing the d=  
igits=20  
at the end of the value given above, it is possible to control the sessio=  
n at=20  
the given ID. This token is sent as part of the login page, and as such, =  
can be=20  
manipulated by an unauthenticated attacker, giving them access to any val=  
id=20  
session. Consequentially, it is possible to access the following page as =  
  
such:<BR><BR><A=20  
href=3D"https://app.domain.co.uk/web2edoc/close.htm?SSNID=3DW90NIxGoSsN10=  
23ZYW2E735182000026">https://app.domain.co.uk/web2edoc/close.htm?SSNID=3D=  
W90NIxGoSsN1023ZYW2E735182000026</A><BR><BR>    &nbsp=  
;  =20  
Ending the session specified, which could lead to a denial of service=20  
condition.</FONT></P>  
<P><FONT=20  
size=3D2><BR>          =  
     <BR>Further=20  
details at: <BR></FONT><FONT size=3D2><A=20  
href=3D"http://portcullis-security.com/security-research-and-downloads/se=  
curity-advisories/cve-2014-1219/">http://portcullis-security.com/security=  
-research-and-downloads/security-advisories/cve-2014-1219/</A><BR><BR><BR=  
>Copyright:<BR>Copyright=20  
(c) Portcullis Computer Security Limited 2014, All rights reserved worldw=  
ide.=20  
Permission is hereby granted for the electronic redistribution of this=20  
information. It is not to be edited or altered in any way without the exp=  
ress=20  
written consent of Portcullis Computer Security=20  
Limited.<BR><BR>Disclaimer:<BR>The information herein contained may chang=  
e=20  
without notice. Use of this information constitutes acceptance for use in=  
=20an AS=20  
IS condition. There are NO warranties, implied or otherwise, with regard =  
to this=20  
information or its use. Any use of this information is at the user's risk=  
. In no=20  
event shall the author/distributor (Portcullis Computer Security Limited)=  
=20be=20  
held liable for any damages whatsoever arising out of or in connection wi=  
th the=20  
use or spread of this information.</FONT></P>  
<P>  
<HR>  
</P>  
<P>This email originates from the systems of Portcullis<BR>Computer Secur=  
ity=20  
Limited, a Private limited company, <BR>registered in England in accordan=  
ce with=20  
the Companies <BR>Act under number 02763799. The registered office <BR>ad=  
dress=20  
of Portcullis Computer Security Limited is: <BR>The Grange Barn, Pikes En=  
d,=20  
Pinner, MIDDX, <BR>United Kingdom, HA5 2EX. <BR>The information in this e=  
mail is=20  
confidential and may be <BR>legally privileged. It is intended solely for=  
=20the=20  
addressee. <BR>Any opinions expressed are those of the individual and <BR=  
>do not=20  
represent the opinion of the organisation. Access <BR>to this email by pe=  
rsons=20  
other than the intended recipient <BR>is strictly prohibited.<BR>If you a=  
re not=20  
the intended recipient, any disclosure, <BR>copying, distribution or othe=  
r=20  
action taken or omitted to be <BR>taken in reliance on it, is prohibited =  
and may=20  
be unlawful. <BR>When addressed to our clients any opinions or advice=20  
<BR>contained in this email is subject to the terms and <BR>conditions ex=  
pressed=20  
in the applicable Portcullis Computer <BR>Security Limited terms of=20  
business.</P>  
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