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authordjm@openbsd.org <djm@openbsd.org>2016-09-28 16:33:06 +0000
committerDamien Miller <djm@mindrot.org>2016-09-29 03:11:32 +1000
commit0082fba4efdd492f765ed4c53f0d0fbd3bdbdf7f (patch)
treeb0271896ec4d6c0e716821954212677438824a05 /monitor_wrap.h
parent27c3a9c2aede2184856b5de1e6eca414bb751c38 (diff)
upstream commit
Remove support for pre-authentication compression. Doing compression early in the protocol probably seemed reasonable in the 1990s, but today it's clearly a bad idea in terms of both cryptography (cf. multiple compression oracle attacks in TLS) and attack surface. Moreover, to support it across privilege-separation zlib needed the assistance of a complex shared-memory manager that made the required attack surface considerably larger. Prompted by Guido Vranken pointing out a compiler-elided security check in the shared memory manager found by Stack (http://css.csail.mit.edu/stack/); ok deraadt@ markus@ NB. pre-auth authentication has been disabled by default in sshd for >10 years. Upstream-ID: 32af9771788d45a0779693b41d06ec199d849caf
Diffstat (limited to 'monitor_wrap.h')
-rw-r--r--monitor_wrap.h5
1 files changed, 1 insertions, 4 deletions
diff --git a/monitor_wrap.h b/monitor_wrap.h
index 1bc76aff..db5902f5 100644
--- a/monitor_wrap.h
+++ b/monitor_wrap.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor_wrap.h,v 1.31 2016/08/13 17:47:41 markus Exp $ */
+/* $OpenBSD: monitor_wrap.h,v 1.32 2016/09/28 16:33:07 djm Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
@@ -95,7 +95,4 @@ int mm_bsdauth_respond(void *, u_int, char **);
int mm_skey_query(void *, char **, char **, u_int *, char ***, u_int **);
int mm_skey_respond(void *, u_int, char **);
-/* zlib allocation hooks */
-void mm_init_compression(struct mm_master *);
-
#endif /* _MM_WRAP_H_ */