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Red Hat Bugzilla – Attachment 1448305 Details for
Bug 1588004
pam_mysql segfaults if the passwords starts with not-letter character
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[patch]
the patch
pam_mysql-0.7RC1-strcmp.patch (text/plain), 755 bytes, created by
Alexander Bersenev
on 2018-06-06 13:00:44 UTC
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Description:
the patch
Filename:
MIME Type:
Creator:
Alexander Bersenev
Created:
2018-06-06 13:00:44 UTC
Size:
755 bytes
patch
obsolete
>--- pam_mysql.c 2018-06-06 16:33:38.279050976 +0500 >+++ /root/pam/pam_mysql-0.7RC1/pam_mysql.c 2018-06-06 16:17:48.000000000 +0500 >@@ -2570,6 +2570,7 @@ > MYSQL_RES *result = NULL; > MYSQL_ROW row; > int vresult; >+ char *crypt_result = 0; > > if (ctx->verbose) { > syslog(LOG_AUTHPRIV | LOG_ERR, PAM_MYSQL_LOG_PREFIX "pam_mysql_check_passwd() called."); >@@ -2645,7 +2646,10 @@ > > /* ENCRYPT */ > case 1: >- vresult = strcmp(row[0], crypt(passwd, row[0])); >+ crypt_result = crypt(passwd, row[0]); >+ if (crypt_result != NULL) { >+ vresult = strcmp(row[0], crypt_result); >+ } > if (errno) { > syslog(LOG_AUTHPRIV | LOG_ERR, PAM_MYSQL_LOG_PREFIX "something went wrong when invoking crypt() - %s", strerror(errno)); > }
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