## Summary<\/p>\n
`RedisArrayAggregator` recently added `maxElements` and `maxNestedArrayDepth` limits to fix public Redis resource-exhaustion advisories. The limits are independent, but the allocator remains eager: every positive nested RESP array header creates `new ArrayList(length)` before any child element exists.<\/p>\n
With the default constructor, an attacker can send nested array headers with length `1,000,000` until the default nesting limit of `1024` is reached. This can reserve up to `1,024,000,000` child slots from roughly 12 KB of RESP input. This is backing capacity, not logical list size: `ArrayList(int)` constructs an empty list with the specified initial capacity.<\/p>\n
## Technical Details<\/p>\n
Current `decodeRedisArrayHeader(…)` checks the two limits independently:<\/p>\n
“`java
\nif (header.length() > maxElements) {
\n throw new CodecException(“this codec doesn’t support longer length than ” + maxElements);
\n}<\/p>\n
if (depths.size() >= maxNestedArrayDepth) {
\n releaseAndClearDepths();
\n throw new CodecException(“max nested array depth exceeded: ” + maxNestedArrayDepth);
\n}
\ndepths.push(new AggregateState((int) header.length()));
\n“`<\/p>\n
`AggregateState` i<\/p>\n","protected":false},"excerpt":{"rendered":"
## Summary<\/p>\n
`RedisArrayAggregator` recently added `maxElements` and `maxNestedArrayDepth` limits to fix public Redis resource-exhaustion advisories. The limits are independent, but the allocator rem<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-26384","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/26384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}