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- djm@cvs.openbsd.org 2014/04/16 23:22:45

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[bufaux.c]
     skip leading zero bytes in buffer_put_bignum2_from_string();
     reported by jan AT mojzis.com; ok markus@
This commit is contained in:
Damien Miller 2014-04-20 13:24:49 +10:00
parent 75c62728dc
commit adbfdbbdcc
2 changed files with 8 additions and 1 deletions
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4
ChangeLog
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@ -89,6 +89,10 @@
[sshd.c] [sshd.c]
avoid crash at exit: check that pmonitor!=NULL before dereferencing; avoid crash at exit: check that pmonitor!=NULL before dereferencing;
bz#2225, patch from kavi AT juniper.net bz#2225, patch from kavi AT juniper.net
- djm@cvs.openbsd.org 2014/04/16 23:22:45
[bufaux.c]
skip leading zero bytes in buffer_put_bignum2_from_string();
reported by jan AT mojzis.com; ok markus@
20140401 20140401
- (djm) On platforms that support it, use prctl() to prevent sftp-server - (djm) On platforms that support it, use prctl() to prevent sftp-server

5
bufaux.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: bufaux.c,v 1.56 2014/02/02 03:44:31 djm Exp $ */ /* $OpenBSD: bufaux.c,v 1.57 2014/04/16 23:22:45 djm Exp $ */
/* /*
* Author: Tatu Ylonen <ylo@cs.hut.fi> * Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -372,6 +372,9 @@ buffer_put_bignum2_from_string(Buffer *buffer, const u_char *s, u_int l)
if (l > 8 * 1024) if (l > 8 * 1024)
fatal("%s: length %u too long", __func__, l); fatal("%s: length %u too long", __func__, l);
/* Skip leading zero bytes */
for (; l > 0 && *s == 0; l--, s++)
;
p = buf = xmalloc(l + 1); p = buf = xmalloc(l + 1);
/* /*
* If most significant bit is set then prepend a zero byte to * If most significant bit is set then prepend a zero byte to