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- markus@cvs.openbsd.org 2002/09/10 20:24:47

Browse Source 
[ssh-agent.c]
     check the euid of the connecting process with getpeereid(2);
     ok provos deraadt stevesk
This commit is contained in:
Damien Miller 2002-09-12 09:51:10 +10:00
parent a10f56151b
commit 538f1819d8
2 changed files with 21 additions and 2 deletions
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6
ChangeLog
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@ -11,6 +11,10 @@
- markus@cvs.openbsd.org 2002/09/09 14:54:15 - markus@cvs.openbsd.org 2002/09/09 14:54:15
[channels.c kex.h key.c monitor.c monitor_wrap.c radix.c uuencode.c] [channels.c kex.h key.c monitor.c monitor_wrap.c radix.c uuencode.c]
signed vs unsigned from -pedantic; ok henning@ signed vs unsigned from -pedantic; ok henning@
- markus@cvs.openbsd.org 2002/09/10 20:24:47
[ssh-agent.c]
check the euid of the connecting process with getpeereid(2);
ok provos deraadt stevesk
20020911 20020911
- (djm) Sync openbsd-compat with OpenBSD -current - (djm) Sync openbsd-compat with OpenBSD -current
@ -1631,4 +1635,4 @@
- (stevesk) entropy.c: typo in debug message - (stevesk) entropy.c: typo in debug message
- (djm) ssh-keygen -i needs seeded RNG; report from markus@ - (djm) ssh-keygen -i needs seeded RNG; report from markus@
$Id: ChangeLog,v 1.2454 2002/09/11 23:49:15 djm Exp $ $Id: ChangeLog,v 1.2455 2002/09/11 23:51:10 djm Exp $

17
ssh-agent.c
View File

@ -35,7 +35,7 @@
#include "includes.h" #include "includes.h"
#include "openbsd-compat/fake-queue.h" #include "openbsd-compat/fake-queue.h"
RCSID("$OpenBSD: ssh-agent.c,v 1.102 2002/08/22 20:57:19 stevesk Exp $"); RCSID("$OpenBSD: ssh-agent.c,v 1.103 2002/09/10 20:24:47 markus Exp $");
#include <openssl/evp.h> #include <openssl/evp.h>
#include <openssl/md5.h> #include <openssl/md5.h>
@ -810,6 +810,8 @@ after_select(fd_set *readset, fd_set *writeset)
char buf[1024]; char buf[1024];
int len, sock; int len, sock;
u_int i; u_int i;
uid_t euid;
gid_t egid;
for (i = 0; i < sockets_alloc; i++) for (i = 0; i < sockets_alloc; i++)
switch (sockets[i].type) { switch (sockets[i].type) {
@ -825,6 +827,19 @@ after_select(fd_set *readset, fd_set *writeset)
strerror(errno)); strerror(errno));
break; break;
} }
if (getpeereid(sock, &euid, &egid) < 0) {
error("getpeereid %d failed: %s",
sock, strerror(errno));
close(sock);
break;
}
if (getuid() != euid) {
error("uid mismatch: "
"peer euid %d != uid %d",
(int) euid, (int) getuid());
close(sock);
break;
}
new_socket(AUTH_CONNECTION, sock); new_socket(AUTH_CONNECTION, sock);
} }
break; break;