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Arrow  Topic :

Novell eDirectory 8.8 sp5 HTTPSTK Login Stack Overflow Vulnerability


Arrow  SecurityAlert : 7058
Arrow  CVE : CVE-2009-4654
Arrow  CWE : CWE-119
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Victim interaction required : No
Arrow  Exploit Available : Yes
Arrow  Credit : Hellcode
Arrow  Published : 02.03.2010

Arrow  Affected Software : novell:edirectory:8.8:sp5



Arrow  Advisory Content :  

Vendor: Novell

Product: eDirectory for Windows

Version: 8.8 SP5

Vulnerability: Stack Overflow

Description:

Vulnerability is in "/dhost/httpstk"

This vulnerability allows remote attackers to execute arbitrary code

on vulnerable installations of Novell eDirectory.

The specific flaw exists in the handling of URL parameters

when posting to the login form of the HTTPSTK web server.

( <FORM method="post" action="/dhost/httpstk;submit"> )

Successful exploitation can lead to complete system compromise under the
SYSTEM credentials.

Authentication is required to exploit this vulnerability.

Debugger Results:

(ea8.aec): Access violation - code c0000005 (first chance)

First chance exceptions are reported before any exception handling.

This exception may be expected and handled.

eax=41414141 ebx=734c4d90 ecx=035efe24 edx=00000193 esi=035efe24
edi=035efe24

eip=62408f23 esp=035efd20 ebp=035efd6c iopl=0 nv up ei pl nz na pe
nc

cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010206

*** ERROR: Symbol file could not be found. Defaulted to export symbols for
C:\Novell\NDS\httpstk.dlm -

httpstk!HT_RspCCSetNoCache+0x5fb:

62408f23 80b8e500000000 cmp byte ptr [eax+0E5h],0
ds:0023:41414226=??

0:007> g

(ea8.aec): Access violation - code c0000005 (first chance)

First chance exceptions are reported before any exception handling.

This exception may be expected and handled.

eax=00000000 ebx=00000000 ecx=41414141 edx=77569bad esi=00000000
edi=00000000

eip=41414141 esp=035ef950 ebp=035ef970 iopl=0 nv up ei pl zr na pe
nc

cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246

41414141 ?? ???

0:007> !exchain

035ef964: ntdll!RtlRaiseStatus+c8 (77569bad)

035eff34: 41414141

Invalid exception stack at 41414141

Credit to:

karak0rsan and murderkey from Hellcode Research

www.hellcode.net

Proof of Concept:

http://tcc.hellcode.net/sploitz/httpstk.txt

Original Advisory:

http://tcc.hellcode.net/advisories/hellcode-adv005.txt



Arrow  References :

http://xforce.iss.net/xforce/xfdb/54308
http://www.securitytracker.com/id?1023188
http://www.securityfocus.com/bid/37042
http://www.securityfocus.com/archive/1/archive/1/507926/100/0/threaded
http://tcc.hellcode.net/sploitz/httpstk.txt
http://tcc.hellcode.net/advisories/hellcode-adv005.txt
http://downloads.securityfocus.com/vulnerabilities/exploits/37042-2.pl




Arrow  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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