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| author | des <des@FreeBSD.org> | 2017-11-14 10:48:30 +0000 |
|---|---|---|
| committer | des <des@FreeBSD.org> | 2017-11-14 10:48:30 +0000 |
| commit | b242fe393914310e50673eb62d480ce03706d745 (patch) | |
| tree | 7cd75192bab160dda3a67982bf13e510d9f7e17f /lib | |
| parent | e683b49c3e3b94e2c0f2704881e1fb1acd1c090b (diff) | |
| download | FreeBSD-src-b242fe393914310e50673eb62d480ce03706d745.zip FreeBSD-src-b242fe393914310e50673eb62d480ce03706d745.tar.gz | |
MFH (r325010): don't bother verifying a password that we know is too long.
Reported by: jkim@
Security: CVE-2016-6210
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libpam/modules/pam_unix/pam_unix.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/libpam/modules/pam_unix/pam_unix.c b/lib/libpam/modules/pam_unix/pam_unix.c index 5403d5d..2fd3b61 100644 --- a/lib/libpam/modules/pam_unix/pam_unix.c +++ b/lib/libpam/modules/pam_unix/pam_unix.c @@ -111,6 +111,7 @@ pam_sm_authenticate(pam_handle_t *pamh, int flags __unused, if (!(flags & PAM_DISALLOW_NULL_AUTHTOK) && openpam_get_option(pamh, PAM_OPT_NULLOK)) return (PAM_SUCCESS); + PAM_LOG("Password is empty, using fake password"); realpw = "*"; } lc = login_getpwclass(pwd); @@ -125,6 +126,10 @@ pam_sm_authenticate(pam_handle_t *pamh, int flags __unused, if (retval != PAM_SUCCESS) return (retval); PAM_LOG("Got password"); + if (strnlen(pass, _PASSWORD_LEN + 1) > _PASSWORD_LEN) { + PAM_LOG("Password is too long, using fake password"); + realpw = "*"; + } if (strcmp(crypt(pass, realpw), realpw) == 0) return (PAM_SUCCESS); |
