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authorDamien Miller <djm@mindrot.org>1999-11-16 13:37:16 +1100
committerDamien Miller <djm@mindrot.org>1999-11-16 13:37:16 +1100
commit7e8e820153a620ab1dcd81857a7de0969c41d043 (patch)
tree226cc4185feae97f4069ad60b4c18d259aa5df2f /ssh.c
parent4874c79a3a05fc18678d7a85d7091f5139630fac (diff)
- Merged OpenBSD CVS changes:
- [auth-rh-rsa.c auth-rsa.c authfd.c authfd.h hostfile.c mpaux.c] [mpaux.h ssh-add.c ssh-agent.c ssh.h ssh.c sshd.c] the keysize of rsa-parameter 'n' is passed implizit, a few more checks and warnings about 'pretended' keysizes. - [cipher.c cipher.h packet.c packet.h sshd.c] remove support for cipher RC4 - [ssh.c] a note for legay systems about secuity issues with permanently_set_uid(), the private hostkey and ptrace() - [sshconnect.c] more detailed messages about adding and checking hostkeys
Diffstat (limited to 'ssh.c')
-rw-r--r--ssh.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/ssh.c b/ssh.c
index 43950f7c..08a32cc1 100644
--- a/ssh.c
+++ b/ssh.c
@@ -18,7 +18,7 @@ Modified to work with SSL by Niels Provos <provos@citi.umich.edu> in Canada.
*/
#include "includes.h"
-RCSID("$Id: ssh.c,v 1.9 1999/11/15 06:10:57 damien Exp $");
+RCSID("$Id: ssh.c,v 1.10 1999/11/16 02:37:16 damien Exp $");
#include "xmalloc.h"
#include "ssh.h"
@@ -555,6 +555,13 @@ main(int ac, char **av)
them. Also, extra privileges could make it very hard to read identity
files and other non-world-readable files from the user's home directory
if it happens to be on a NFS volume where root is mapped to nobody. */
+
+ /* Note that some legacy systems need to postpone the following call to
+ permanently_set_uid() until the private hostkey is destroyed with
+ RSA_free(). Otherwise the calling user could ptrace() the process,
+ read the private hostkey and impersonate the host. OpenBSD does not
+ allow ptracing of setuid processes. */
+
permanently_set_uid(original_real_uid);
/* Now that we are back to our own permissions, create ~/.ssh directory