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vpcd: allow *extended* length APDUs

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- don't predefine any limits on the transceive size
- fixes out of bounds access
This commit is contained in:
Frank Morgner
2018-02-05 21:05:37 +01:00
parent a9482d9f99
commit a63d35d224
7 changed files with 64 additions and 35 deletions
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10
virtualsmartcard/win32/BixVReader/PipeReader.cpp
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@@ -71,7 +71,7 @@ bool PipeReader::CheckATR() {
}
return true;
}
bool PipeReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE *Resp,int *Resplen) {
bool PipeReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE **Resp,int *Resplen) {
//SectionLocker lock(dataSection);
if (pipe==NULL)
@@ -97,7 +97,13 @@ bool PipeReader::QueryTransmit(BYTE *APDU,int APDUlen,BYTE *Resp,int *Resplen) {
pipe=NULL;
return false;
}
if (!ReadFile(pipe,Resp,dwRespLen,&read,NULL)) {
BYTE *p=(BYTE *)realloc(*Resp, dwRespLen);
if (p==NULL) {
pipe=NULL;
return false;
}
*Resp=p;
if (!ReadFile(pipe,*Resp,dwRespLen,&read,NULL)) {
pipe=NULL;
return false;
}