module

HP NNM CGI webappmon.exe OvJavaLocale Buffer Overflow

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Disclosed
Aug 3, 2010
Created
May 30, 2018

Description

This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.53.
By sending a request containing a cookie longer than 5120 bytes, an attacker can overflow
a stack buffer and execute arbitrary code.

The vulnerable code is within the OvWwwDebug function. The static-sized stack buffer is
declared within this function. When the vulnerability is triggered, the stack trace looks
like the following:

#0 ...
#1 sprintf_new(local_stack_buf, fmt, cookie);
#2 OvWwwDebug(" HTTP_COOKIE=%s\n", cookie);
#3 ?OvWwwInit@@YAXAAHQAPADPBD@Z(x, x, x);
#4 sub_405ee0("nnm", "webappmon");

No validation is done on the cookie argument. There are no stack cookies, so exploitation
is easily achieved by overwriting the saved return address or SEH frame.

The original advisory detailed an attack vector using the "OvJavaLocale" cookie being
passed in a request to "webappmon.exe". Further research shows that several different
cookie values, as well as several different CGI applications, can be used.
'

Authors

Nahuel Riva
sinn3r [email protected]
jduck [email protected]

Platform

Windows

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':


    msf > use exploit/windows/http/hp_nnm_webappmon_ovjavalocale
    msf exploit(hp_nnm_webappmon_ovjavalocale) > show targets
        ...targets...
    msf exploit(hp_nnm_webappmon_ovjavalocale) > set TARGET < target-id >
    msf exploit(hp_nnm_webappmon_ovjavalocale) > show options
        ...show and set options...
    msf exploit(hp_nnm_webappmon_ovjavalocale) > exploit
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