RepoMirrors/openssh
1
0
Fork 0
mirror of git://anongit.mindrot.org/openssh.git synced 2024-12-17 23:54:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

propagate PAM crashes to PerSourcePenalties

Browse Source 
If the PAM subprocess crashes, exit with a crash status that will be
picked up by the sshd(8) listener process where it can be used by
PerSourcePenalties to block the client. This is similar handling to
the privsep preauth process.
This commit is contained in:
Damien Miller 2024-06-17 17:02:18 +10:00
parent 1c207f456a
commit b00331402f
No known key found for this signature in database
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
auth-pam.c
View File

@ -100,6 +100,7 @@
#include "ssh-gss.h"
#endif
#include "monitor_wrap.h"
#include "srclimit.h"
extern ServerOptions options;
extern struct sshbuf *loginmsg;
@ -166,13 +167,13 @@ sshpam_sigchld_handler(int sig)
return;
}
}
if (WIFSIGNALED(sshpam_thread_status) &&
WTERMSIG(sshpam_thread_status) == SIGTERM)
return; /* terminated by pthread_cancel */
if (!WIFEXITED(sshpam_thread_status))
sigdie("PAM: authentication thread exited unexpectedly");
if (WEXITSTATUS(sshpam_thread_status) != 0)
sigdie("PAM: authentication thread exited uncleanly");
if (sshpam_thread_status == -1)
return;
if (WIFSIGNALED(sshpam_thread_status)) {
if (signal_is_crash(WTERMSIG(sshpam_thread_status)))
_exit(EXIT_CHILD_CRASH);
} else if (!WIFEXITED(sshpam_thread_status))
_exit(EXIT_CHILD_CRASH);
}
/* ARGSUSED */