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Added bounds checking.

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Chad Fraleigh 2023-07-03 15:49:18 -07:00
parent 245e6b6efd
commit a516d7812a
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GPG key ID: 2415C39758458A8F
2 changed files with 12 additions and 0 deletions
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8
libi2pd/LeaseSet.cpp
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@ -394,6 +394,10 @@ namespace data
size_t LeaseSet2::ReadStandardLS2TypeSpecificPart (const uint8_t * buf, size_t len)
{
size_t offset = 0;
if(offset + 2 > len) // AKA (len < 2)
return 0;
// properties
uint16_t propertiesLen = bufbe16toh (buf + offset); offset += 2;
offset += propertiesLen; // skip for now. TODO: implement properties
@ -448,6 +452,10 @@ namespace data
size_t LeaseSet2::ReadMetaLS2TypeSpecificPart (const uint8_t * buf, size_t len)
{
size_t offset = 0;
if(offset + 2 > len) // AKA (len < 2)
return 0;
// properties
uint16_t propertiesLen = bufbe16toh (buf + offset); offset += 2;
offset += propertiesLen; // skip for now. TODO: implement properties

4
libi2pd/NetDb.cpp
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@ -922,6 +922,10 @@ namespace data
else if(!m_FloodfillBootstrap)
LogPrint (eLogWarning, "NetDb: Requested destination for ", key, " not found");
// All peers hashs in buffer?
if(msg->GetPayloadLength() < (size_t) (33 + num * 32))
return;
// try responses
for (int i = 0; i < num; i++)
{