renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-11-20 16:46:23 +08:00
Code

[SCTP]: Discard unauthenticated ASCONF and ASCONF ACK chunks

Browse Source 
Now that we support AUTH, discard unauthenticated ASCONF and ASCONF ACK
chunks as mandated in the ADD-IP spec.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2007-12-20 14:08:04 -08:00 committed by David S. Miller
parent 195ad6a3ac
commit 6afd2e83cd
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
net/sctp/sm_statefuns.c
View File

@ -3377,6 +3377,15 @@ sctp_disposition_t sctp_sf_do_asconf(const struct sctp_endpoint *ep,
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
}
/* ADD-IP: Section 4.1.1
* This chunk MUST be sent in an authenticated way by using
* the mechanism defined in [I-D.ietf-tsvwg-sctp-auth]. If this chunk
* is received unauthenticated it MUST be silently discarded as
* described in [I-D.ietf-tsvwg-sctp-auth].
*/
if (!sctp_addip_noauth && !chunk->auth)
return sctp_sf_discard_chunk(ep, asoc, type, arg, commands);
/* Make sure that the ASCONF ADDIP chunk has a valid length. */
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_addip_chunk_t)))
return sctp_sf_violation_chunklen(ep, asoc, type, arg,
@ -3463,6 +3472,15 @@ sctp_disposition_t sctp_sf_do_asconf_ack(const struct sctp_endpoint *ep,
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
}
/* ADD-IP, Section 4.1.2:
* This chunk MUST be sent in an authenticated way by using
* the mechanism defined in [I-D.ietf-tsvwg-sctp-auth]. If this chunk
* is received unauthenticated it MUST be silently discarded as
* described in [I-D.ietf-tsvwg-sctp-auth].
*/
if (!sctp_addip_noauth && !asconf_ack->auth)
return sctp_sf_discard_chunk(ep, asoc, type, arg, commands);
/* Make sure that the ADDIP chunk has a valid length. */
if (!sctp_chunk_length_valid(asconf_ack, sizeof(sctp_addip_chunk_t)))
return sctp_sf_violation_chunklen(ep, asoc, type, arg,