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Add better length check to BuildOptionsVal()

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Tim Wojtulewicz 2022-09-09 11:08:56 -07:00
parent 4c00c3c4ca
commit 95e758e012
3 changed files with 21 additions and 2 deletions
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19
CHANGES
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@ -1,3 +1,22 @@
5.1.0-dev.511 | 2022-09-19 12:41:31 -0700
* Add better length check to BuildOptionsVal() (Tim Wojtulewicz, Corelight)
* smb: Unify transaction_data_to_val() usage (Arne Welzel, Corelight)
the data/string handling in smb1-com-transaction.pcac was improved
with c75519ca8869448efc488598090f96d63352312f, re-use the added
functionality also for smb1-com-transaction-secondary.pac to avoid
buffer overflows.
* Add some additional checks for caplen in ICMP analyzer (Tim Wojtulewicz, Corelight)
* irc: Check parts.size() before removing the nick (Arne Welzel, Corelight)
...also, don't remove the nick twice.
* Check IP payload length before casting to transport structure (Tim Wojtulewicz, Corelight)
5.1.0-dev.506 | 2022-09-15 11:11:57 -0400 5.1.0-dev.506 | 2022-09-15 11:11:57 -0400
* Use NextStream instead of ForwardStream in fuzzers (Tim Wojtulewicz, Corelight) * Use NextStream instead of ForwardStream in fuzzers (Tim Wojtulewicz, Corelight)

2
VERSION
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@ -1 +1 @@
5.1.0-dev.506 5.1.0-dev.511

2
src/IP.cc
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@ -20,7 +20,7 @@ static VectorValPtr BuildOptionsVal(const u_char* data, int len)
{ {
auto vv = make_intrusive<VectorVal>(id::find_type<VectorType>("ip6_options")); auto vv = make_intrusive<VectorVal>(id::find_type<VectorType>("ip6_options"));
while ( len > 0 ) while ( static_cast<size_t>(len) >= sizeof(struct ip6_opt) )
{ {
static auto ip6_option_type = id::find_type<RecordType>("ip6_option"); static auto ip6_option_type = id::find_type<RecordType>("ip6_option");
const struct ip6_opt* opt = (const struct ip6_opt*)data; const struct ip6_opt* opt = (const struct ip6_opt*)data;