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#343. check for malformed messages

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orignal 2016-02-02 11:55:38 -05:00
parent 4ced1e5075
commit 64b2a32c9a
5 changed files with 38 additions and 11 deletions
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13
LeaseSet.cpp
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@ -85,13 +85,24 @@ namespace data
if (readIdentity || !m_Identity)
m_Identity = std::make_shared<IdentityEx>(m_Buffer, m_BufferLen);
size_t size = m_Identity->GetFullLen ();
if (size > m_BufferLen)
{
LogPrint (eLogError, "LeaseSet: identity length ", size, " exceeds buffer size ", m_BufferLen);
m_IsValid = false;
return;
}
memcpy (m_EncryptionKey, m_Buffer + size, 256);
size += 256; // encryption key
size += m_Identity->GetSigningPublicKeyLen (); // unused signing key
uint8_t num = m_Buffer[size];
size++; // num
LogPrint (eLogDebug, "LeaseSet: read num=", (int)num);
if (!num) m_IsValid = false;
if (!num || num > MAX_NUM_LEASES)
{
LogPrint (eLogError, "LeaseSet: incorrect number of leases", (int)num);
m_IsValid = false;
return;
}
// process leases
const uint8_t * leases = m_Buffer + size;