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Synopsis: OpenSER OSP Module remote code execution
Product: OpenSER
Version: <=1.1.0
Issue:
======
A critical security vulnerability has been found in OpenSER Open
Settlement Protocol (OSP) module. OSP is an ETSI defined standard
for Inter-Domain VoIP pricing,authorization and usage exchange.
Details:
========
int validateospheader (struct sip_msg* msg, char* ignore1, char* ignore2)
This following fuction suffers from buffer overflow vulnerability, which
leads to memory corruption conditions. Due to memory corruption conditions
remote code execution is possible.
Affected Versions
=================
OpenSER <= 1.1.0
Solution
=========
Proper boundary checking.
Exploitation
============
Exploitation might be conducted by preparing a specially crafted
OSP header.
Kind regards,
Michal Bucko - sapheal
Senior Security Specialist
HACK.PL
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