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From 37f2e0f0658d78a1496dc277f402f8b577ce6aae Mon Sep 17 00:00:00 2001
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From: Klaus Espenlaub <klaus@espenlaub.com>
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Date: Tue, 8 Feb 2022 20:34:40 +0000
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Subject: [PATCH] CVE-2022-24407 Escape password for SQL insert/update
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commands.
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Signed-off-by: Klaus Espenlaub <klaus@espenlaub.com>
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---
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plugins/sql.c | 26 +++++++++++++++++++++++---
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1 file changed, 23 insertions(+), 3 deletions(-)
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diff --git a/plugins/sql.c b/plugins/sql.c
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index 31b54a78..6ac81c2f 100644
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--- a/plugins/sql.c
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+++ b/plugins/sql.c
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@@ -1151,6 +1151,7 @@ static int sql_auxprop_store(void *glob_context,
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char *statement = NULL;
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char *escap_userid = NULL;
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char *escap_realm = NULL;
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+ char *escap_passwd = NULL;
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const char *cmd;
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sql_settings_t *settings;
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@@ -1222,6 +1223,11 @@ static int sql_auxprop_store(void *glob_context,
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"Unable to begin transaction\n");
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}
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for (cur = to_store; ret == SASL_OK && cur->name; cur++) {
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+ /* Free the buffer, current content is from previous loop. */
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+ if (escap_passwd) {
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+ sparams->utils->free(escap_passwd);
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+ escap_passwd = NULL;
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+ }
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if (cur->name[0] == '*') {
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continue;
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@@ -1243,19 +1249,32 @@ static int sql_auxprop_store(void *glob_context,
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}
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sparams->utils->free(statement);
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+ if (cur->values[0]) {
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+ escap_passwd = (char *)sparams->utils->malloc(strlen(cur->values[0])*2+1);
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+ if (!escap_passwd) {
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+ ret = SASL_NOMEM;
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+ break;
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+ }
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+ settings->sql_engine->sql_escape_str(escap_passwd, cur->values[0]);
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+ }
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+
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/* create a statement that we will use */
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statement = sql_create_statement(cmd, cur->name, escap_userid,
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escap_realm,
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- cur->values && cur->values[0] ?
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- cur->values[0] : SQL_NULL_VALUE,
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+ escap_passwd ?
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+ escap_passwd : SQL_NULL_VALUE,
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sparams->utils);
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+ if (!statement) {
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+ ret = SASL_NOMEM;
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+ break;
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+ }
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{
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char *log_statement =
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sql_create_statement(cmd, cur->name,
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escap_userid,
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escap_realm,
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- cur->values && cur->values[0] ?
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+ escap_passwd ?
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"<omitted>" : SQL_NULL_VALUE,
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sparams->utils);
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sparams->utils->log(sparams->utils->conn, SASL_LOG_DEBUG,
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@@ -1288,6 +1307,7 @@ static int sql_auxprop_store(void *glob_context,
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done:
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if (escap_userid) sparams->utils->free(escap_userid);
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if (escap_realm) sparams->utils->free(escap_realm);
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+ if (escap_passwd) sparams->utils->free(escap_passwd);
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if (conn) settings->sql_engine->sql_close(conn);
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if (userid) sparams->utils->free(userid);
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if (realm) sparams->utils->free(realm);
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--
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2.25.1
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