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Cedar/Proto_PPP.c: Fix memory leak in EAP-MSCHAPv2

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Fixes: #1420 (Implement EAP-MSCHAPv2)
This commit is contained in:
domosekai 2021-07-21 11:13:43 +00:00
parent 1f40de2dda
commit 8b87c9d4ef
1 changed files with 6 additions and 3 deletions
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9
src/Cedar/Proto_PPP.c
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@ -272,10 +272,11 @@ void PPPThread(THREAD *thread, void *param)
p->Eap_PacketId = p->NextId; // Do not increase NextId so that MSCHAPv2 could use the same id p->Eap_PacketId = p->NextId; // Do not increase NextId so that MSCHAPv2 could use the same id
lcp = BuildMSCHAP2ChallengePacket(p); lcp = BuildMSCHAP2ChallengePacket(p);
BUF *b = BuildLCPData(lcp); BUF *b = BuildLCPData(lcp);
FreePPPLCP(lcp);
lcpEap = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size); lcpEap = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size);
eapPacket = lcpEap->Data; eapPacket = lcpEap->Data;
Copy(eapPacket->Data, b->Buf, b->Size); Copy(eapPacket->Data, b->Buf, b->Size);
Free(b); FreeBuf(b);
PPPSetStatus(p, PPP_STATUS_AUTHENTICATING); PPPSetStatus(p, PPP_STATUS_AUTHENTICATING);
if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcpEap) == false) if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcpEap) == false)
{ {
@ -1103,11 +1104,12 @@ bool PPPProcessCHAPResponsePacketEx(PPP_SESSION *p, PPP_PACKET *pp, PPP_PACKET *
else else
{ {
BUF *b = BuildLCPData(lcp); BUF *b = BuildLCPData(lcp);
FreePPPLCP(lcp);
p->Eap_PacketId = p->NextId++; p->Eap_PacketId = p->NextId++;
lcp = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size); lcp = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size);
PPP_EAP *eapPacket = lcp->Data; PPP_EAP *eapPacket = lcp->Data;
Copy(eapPacket->Data, b->Buf, b->Size); Copy(eapPacket->Data, b->Buf, b->Size);
Free(b); FreeBuf(b);
if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcp) == false) if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcp) == false)
{ {
@ -1160,11 +1162,12 @@ bool PPPProcessCHAPResponsePacketEx(PPP_SESSION *p, PPP_PACKET *pp, PPP_PACKET *
else else
{ {
BUF *b = BuildLCPData(lcp); BUF *b = BuildLCPData(lcp);
FreePPPLCP(lcp);
p->Eap_PacketId = p->NextId++; p->Eap_PacketId = p->NextId++;
lcp = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size); lcp = BuildEAPPacketEx(PPP_EAP_CODE_REQUEST, p->Eap_PacketId, PPP_EAP_TYPE_MSCHAPV2, b->Size);
PPP_EAP *eapPacket = lcp->Data; PPP_EAP *eapPacket = lcp->Data;
Copy(eapPacket->Data, b->Buf, b->Size); Copy(eapPacket->Data, b->Buf, b->Size);
Free(b); FreeBuf(b);
if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcp) == false) if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_EAP, lcp) == false)
{ {