CVE-2025-43972: GoBGP crashes in the flowspec parser

April 21, 2025

An issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.

References

github.com/advisories/GHSA-mfvv-mgf6-q25r
github.com/osrg/gobgp
github.com/osrg/gobgp/commit/ca7383f450f7b296c5389feceef2467de5ab6e5a
github.com/osrg/gobgp/compare/v3.34.0...v3.35.0
nvd.nist.gov/vuln/detail/CVE-2025-43972

Code Behaviors & Features

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