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Red Hat Bugzilla – Attachment 833081 Details for
Bug 1038555
CVE-2013-7041 pam: pam_userdb case insensitive password hash comparison
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[patch]
Patch for this vulnerability.
pam_userdb.strncasecmp.patch (text/plain), 623 bytes, created by
Ratul Gupta
on 2013-12-05 10:44:52 UTC
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Description:
Patch for this vulnerability.
Filename:
MIME Type:
Creator:
Ratul Gupta
Created:
2013-12-05 10:44:52 UTC
Size:
623 bytes
patch
obsolete
>diff --git a/modules/pam_userdb/pam_userdb.c b/modules/pam_userdb/pam_userdb.c >index 11b0d6b..37af682 100644 >--- a/modules/pam_userdb/pam_userdb.c >+++ b/modules/pam_userdb/pam_userdb.c >@@ -227,7 +227,11 @@ user_lookup (pam_handle_t *pamh, const char *database, const char *cryptmode, > cryptpw = crypt (pass, salt); > > if (cryptpw) { >- compare = strncasecmp (data.dptr, cryptpw, data.dsize); >+ if (strlen(cryptpw) != data.dsize) { >+ compare = -1; >+ } else { >+ compare = memcmp (data.dptr, cryptpw, data.dsize); >+ } > } else { > compare = -2; > if (ctrl & PAM_DEBUG_ARG) {
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