When parsing a verdict map json where element jumps to chain represented
as empty string.
internal:0:0-0: Error: Parsing list expression item at index 0 failed.
internal:0:0-0: Error: Invalid set elem at index 0.
internal:0:0-0: Error: Invalid set elem expression.
internal:0:0-0: Error: Parsing command array at index 2 failed.
Fixes: 586ad210368b ("libnftables: Implement JSON parser")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
This is extra, on top of Florian's fix to address this from the evalution
step, not a replacement.
src/parser_json.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/parser_json.c b/src/parser_json.c
index 04d762741e4a..ef7740840710 100644
--- a/src/parser_json.c
+++ b/src/parser_json.c
@@ -1350,6 +1350,9 @@ static struct expr *json_parse_verdict_expr(struct json_ctx *ctx,
json_unpack_err(ctx, root, "{s:s}", "target", &chain))
return NULL;
+ if (!chain || chain[0] == '\0')
+ return NULL;
+
return verdict_expr_alloc(int_loc, verdict_tbl[i].verdict,
json_alloc_chain_expr(chain));
}
--
2.30.2
