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FIXING main vul #26

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FIXING main vul #26

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dcfce9d
FIX: Integer Overflow in pico icmp4
Dec 7, 2024
95a5df3
FIX: Integer underflow in pico_socket_fionread
Dec 7, 2024
8e09444
missing parentheses
Dec 19, 2024
734c6e2
adjusting ptr checks
Dec 20, 2024
6662e48
Merge branch 'virtualsquare:master' into master
Dec 20, 2024
4f0b14d
FIX: CVE vulnerabilities
Dec 20, 2024
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13 changes: 7 additions & 6 deletions modules/pico_dns_client.c
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
/*********************************************************************
* PicoTCP-NG
* PicoTCP-NG
* Copyright (c) 2020 Daniele Lacamera <root@danielinux.net>
*
* This file also includes code from:
* PicoTCP
* Copyright (c) 2012-2017 Altran Intelligent Systems
* Authors: Kristof Roelants
*
*
* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
*
* PicoTCP-NG is free software; you can redistribute it and/or modify
Expand Down Expand Up @@ -596,9 +596,6 @@ static void pico_dns_client_callback(uint16_t ev, struct pico_socket *s)
}

header = (struct pico_dns_header *)dns_response;
domain = (char *)header + sizeof(struct pico_dns_header);
qsuffix = (struct pico_dns_question_suffix *)pico_dns_client_seek(domain);
/* valid asuffix is determined dynamically later on */

if (pico_dns_client_check_header(header) < 0)
return;
Expand All @@ -607,6 +604,11 @@ static void pico_dns_client_callback(uint16_t ev, struct pico_socket *s)
if (!q)
return;

// FIX: what if the query is not a PTR query?
domain = (char *)header + sizeof(struct pico_dns_header);
qsuffix = (struct pico_dns_question_suffix *)pico_dns_client_seek(domain);
/* valid asuffix is determined dynamically later on */

if (pico_dns_client_check_qsuffix(qsuffix, q) < 0)
return;

Expand Down Expand Up @@ -873,4 +875,3 @@ int pico_dns_client_init(struct pico_stack *S)


#endif /* PICO_SUPPORT_DNS_CLIENT */

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