Description
OvenMediaEngine through 0.21.0 contains a denial of service vulnerability in OvtPacket::LoadHeader() that allows unauthenticated attackers to stall connections by sending payload_length values above 32750. Attackers can send crafted OVT packets to the OVT listener to hold connections open indefinitely and accumulate buffered memory, disrupting origin-to-edge stream relay.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OvenMediaLabs | OvenMediaEngine | ≤ 0.21.0 | — |
References
- GitHub Issue #2330 issue-tracking
- https://github.com/OvenMediaLabs/OvenMediaEngine product
- https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129 technical-description
- https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53 technical-description
- https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786 patch
- VulnCheck Advisory: OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length third-party-advisory