Internet Bug Bounty · Report #2599391
CVE-2024-3416: MTU of 4096 or greater without fragmentation may cause NGINX worker processes to leak previously freed memory
Summary
When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module and the network infrastructure supports a Maximum Transmission Unit (MTU) of 4096 or greater without fragmentation, undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory.
Impact
Undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory.
How it was found
When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module and the network infrastructure supports a Maximum Transmission Unit (MTU) of 4096 or greater without fragmentation, undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory.
Impact
Undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory.