Rust-WebSocket is a WebSocket (RFC6455) library written in Rust. In versions prior to 0.26.5 untrusted websocket connections can cause an out-of-memory (OOM) process abort in a client or a server. The root cause of the issue is during dataframe parsing. Affected versions would allocate a buffer based on the declared dataframe size, which may come from an untrusted source. When `Vec::with_capacity` fails to allocate, the default Rust allocator will abort the current process, killing all threads. This affects only sync (non-Tokio) implementation. Async version also does not limit memory, but does not use `with_capacity`, so DoS can happen only when bytes for oversized dataframe or message actually got delivered by the attacker. The crashes are fixed in version 0.26.5 by imposing default dataframe size limits. Affected users are advised to update to this version. Users unable to upgrade are advised to filter websocket traffic externally or to only accept trusted traffic. https://github.com/websockets-rs/rust-websocket/commit/cbf6e9983e839d2ecad86de8cd1b3f20ed43390b https://github.com/websockets-rs/rust-websocket/security/advisories/GHSA-qrjv-rf5q-qpxc
Created rust-websocket tracking bugs for this issue: Affects: fedora-all [bug 2115228] Created rust-websocket-base tracking bugs for this issue: Affects: fedora-all [bug 2115227]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.