Description
CometD is a scalable comet implementation for web messaging. In versions 5.0.0 through 5.0.22, 6.0.0 through 6.0.18, 7.0.0 through 7.0.18, and 8.0.0 through 8.0.8, bad clients that always send a fixed batch value when the server is using the acknowledgement extension may cause the unacknowledged message queue to grow indefinitely, eventually causing an `OutOfMemoryError`. Versions 5.0.23, 6.0.19, 7.0.19, and 8.0.9 patch the issue. As a workaround, disable the acknowledgement extension.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
cometd cometd
>= 5.0.0, < 5.0.23affected>= 6.0.0, < 6.0.19affected>= 7.0.0, < 7.0.19affected>= 8.0.0, < 8.0.9affected
References
- https://github.com/cometd/cometd/security/advisories/GHSA-cqgj-h8vf-4w59 ↗
- https://github.com/cometd/cometd/issues/2117 ↗
- https://github.com/cometd/cometd/pull/2118 ↗
- https://github.com/cometd/cometd/pull/2168 ↗
- https://github.com/cometd/cometd/pull/2169 ↗
- https://github.com/cometd/cometd/discussions/2116 ↗