CyberRota Analysis
AI-GeneratedThe vulnerability affects the ANTLR 3 search query parser in specific versions of Gerrit Code Review, allowing unauthenticated remote attackers or authenticated users to exploit crafted search queries with deeply nested parentheses. This can lead to a persistent denial of service by exhausting CPU resources and starving HTTP worker threads, necessitating a server restart. Organizations using the affected Gerrit versions should prioritize applying the patches available in versions 3.12.10, 3.13.9, and 3.14.3 to mitigate this high-severity risk.
Original NVD Description
Uncontrolled Resource Consumption (CWE-400 / CWE-407) in the ANTLR 3 search query parser (QueryParser / Query.g) in Gerrit Code Review versions 2.0.19 through 3.12.9, 3.13.0 through 3.13.8, and 3.14.0 through 3.14.2 allows an unauthenticated remote attacker (or an authenticated user if anonymous read access is disabled) to cause a persistent denial of service (CPU exhaustion and HTTP worker thread pool starvation requiring a server restart) via crafted search queries containing deeply nested parentheses sent to query evaluation endpoints (/changes/?q=, /accounts/?q=, /groups/?query=, /projects/?query=, /Documentation/?q=, /changes/{id}/query?expression=, or SSH gerrit query). Because syntactic predicates in conditionOr and conditionAnd recurse via conditionBase without memoization prior to capability or visibility checks and worker threads do not abort when the client disconnects, a small number of requests (such as 25 requests matching default httpd.maxThreads) can permanently pin all HTTP worker threads. This issue is fixed in Gerrit Code Review versions 3.12.10, 3.13.9, and 3.14.3.