out_cloudwatch_logs: Replace insecure sprintf (#2451)

l2dy · web-flow · commit dd18cea0a0ae · 2020-08-11T12:01:38.000-06:00
Signed-off-by: Zero King &lt;l2dy@icloud.com&gt;
diff --git a/plugins/out_cloudwatch_logs/cloudwatch_api.c b/plugins/out_cloudwatch_logs/cloudwatch_api.c
@@ -248,7 +248,7 @@ static int write_event(struct flb_cloudwatch *ctx, struct cw_flush *buf,
 {
     char ts[50];
 
-    if (!sprintf(ts, "%llu", event->timestamp)) {
+    if (!snprintf(ts, 50, "%llu", event->timestamp)) {
         goto error;
     }
 

Original file line number	Diff line number	Diff line change
`@@ -248,7 +248,7 @@ static int write_event(struct flb_cloudwatch ctx, struct cw_flush buf,`
`248`	`248`	`{`
`249`	`249`	`char ts[50];`
`250`	`250`
`251`		`- if (!sprintf(ts, "%llu", event->timestamp)) {`
	`251`	`+ if (!snprintf(ts, 50, "%llu", event->timestamp)) {`
`252`	`252`	`goto error;`
`253`	`253`	`}`
`254`	`254`