José Miguel Esparza has reported a vulnerability in OpenH323 opal, which can potentially be exploited by malicious people to compromise an application using the library.
The vulnerability is caused due to an error in the processing of SIP (Session Initiation Protocol) packets within the "SIP_PDU::Read()" method in sip/sippdu.cxx. This can be exploited to write a zero byte to an arbitrary memory address.
The vulnerability is reported in version 2.2.4. Other versions may also be affected.
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