diff options
| author | Denis Ovsienko <infrastation@yandex.ru> | 2011-09-26 13:18:51 +0400 |
|---|---|---|
| committer | Denis Ovsienko <infrastation@yandex.ru> | 2011-09-26 18:47:16 +0400 |
| commit | abc7ef44ca05493500865ce81f7b84f5c4eb6594 (patch) | |
| tree | 35504952c627e93203df81ebd5c96023879df00b /ospf6d/ospf6_abr.h | |
| parent | 09395e2a0e93b2cf4258cb1de91887948796bb68 (diff) | |
ospf6d: CVE-2011-3323 (fortify packet reception)
This vulnerability (CERT-FI #514840) was reported by CROSS project.
ospf6d processes IPv6 prefix structures in incoming packets without
verifying that the declared prefix length is valid. This leads to a
crash
caused by out of bounds memory access.
* ospf6_abr.h: new macros for size/alignment validation
* ospf6_asbr.h: idem
* ospf6_intra.h: idem
* ospf6_lsa.h: idem
* ospf6_message.h: idem
* ospf6_proto.h: idem
* ospf6_message.c
* ospf6_packet_minlen: helper array for ospf6_packet_examin()
* ospf6_lsa_minlen: helper array for ospf6_lsa_examin()
* ospf6_hello_recv(): do not call ospf6_header_examin(), let upper
layer verify the input data
* ospf6_dbdesc_recv(): idem
* ospf6_lsreq_recv(): idem
* ospf6_lsupdate_recv(): idem
* ospf6_lsack_recv(): idem
* ospf6_prefixes_examin(): new function, implements A.4.1
* ospf6_lsa_examin(): new function, implements A.4
* ospf6_lsaseq_examin(): new function, an interface to above
* ospf6_packet_examin(): new function, implements A.3
* ospf6_rxpacket_examin(): new function, replaces
ospf6_header_examin()
* ospf6_header_examin(): sayonara
* ospf6_receive(): perform passive interface check earliest possible,
employ ospf6_rxpacket_examin()
Diffstat (limited to 'ospf6d/ospf6_abr.h')
| -rw-r--r-- | ospf6d/ospf6_abr.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ospf6d/ospf6_abr.h b/ospf6d/ospf6_abr.h index 86d00280..816f5964 100644 --- a/ospf6d/ospf6_abr.h +++ b/ospf6d/ospf6_abr.h @@ -35,6 +35,7 @@ extern unsigned char conf_debug_ospf6_abr; (conf_debug_ospf6_abr) /* Inter-Area-Prefix-LSA */ +#define OSPF6_INTER_PREFIX_LSA_MIN_SIZE 4U /* w/o IPv6 prefix */ struct ospf6_inter_prefix_lsa { u_int32_t metric; @@ -42,6 +43,7 @@ struct ospf6_inter_prefix_lsa }; /* Inter-Area-Router-LSA */ +#define OSPF6_INTER_ROUTER_LSA_FIX_SIZE 12U struct ospf6_inter_router_lsa { u_char mbz; |