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snmpv3: fix handling packets with invalid msgAuthenticationParameters length

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Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
This commit is contained in:
0rbitingZer0
2026-05-13 22:40:03 +02:00
committed by Simon Goldschmidt
parent dcd7b1db45
commit 0c957ec030
1 changed files with 2 additions and 2 deletions
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4
src/apps/snmp/snmp_msg.c
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@@ -946,9 +946,9 @@ snmp_parse_inbound_frame(struct snmp_request *request)
inbound_msgAuthenticationParameters_offset = pbuf_stream.offset;
LWIP_UNUSED_ARG(inbound_msgAuthenticationParameters_offset);
/* Read auth parameters */
/* IF_PARSE_ASSERT(tlv.value_len <= SNMP_V3_MAX_AUTH_PARAM_LENGTH); */
IF_PARSE_ASSERT(tlv.value_len <= SNMP_V3_MAX_AUTH_PARAM_LENGTH);
IF_PARSE_EXEC(snmp_asn1_dec_raw(&pbuf_stream, tlv.value_len, request->msg_authentication_parameters,
&u16_value, tlv.value_len));
&u16_value, SNMP_V3_MAX_AUTH_PARAM_LENGTH));
request->msg_authentication_parameters_len = (u8_t)u16_value;
/* msgPrivacyParameters */