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Add additional length check to IEEE 802.11 analyzer

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This commit is contained in:
Tim Wojtulewicz 2023-05-02 16:12:43 -07:00
parent df0788252e
commit 7782f73251
1 changed files with 6 additions and 0 deletions
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6
src/packet_analysis/protocol/ieee802_11/IEEE802_11.cc
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@ -31,6 +31,12 @@ bool IEEE802_11Analyzer::AnalyzePacket(size_t len, const uint8_t* data, Packet*
if ( (data[1] & 0x03) == 0x03 ) if ( (data[1] & 0x03) == 0x03 )
len_80211 += packet->L2_ADDR_LEN; len_80211 += packet->L2_ADDR_LEN;
if ( len_80211 >= len )
{
Weird("truncated_802_11_header", packet);
return false;
}
// Look for the QoS indicator bit. // Look for the QoS indicator bit.
if ( (fc_80211 >> 4) & 0x08 ) if ( (fc_80211 >> 4) & 0x08 )
{ {