cve 2023 46752

About this tag
CVE-2023-46752 is an input-validation vulnerability in the FRRouting (FRR) BGP implementation. The bug allows specially crafted BGP UPDATE attributes containing malformed MP_REACH_NLRI data to crash the bgpd daemon, causing a denial-of-service condition for affected routers and appliances. Patches merged into upstream FRR change the behavior from crashing to politely rejecting malformed attributes and resetting the session. Operators running unpatched releases up to and including FRR 9.0.1 remain at risk until their distributions or vendors deliver updates. This tag covers discussion of the vulnerability, its impact on BGP routing, and available patches and mitigations.

  1. FRR BGP MP_REACH_NLRI Bug CVE-2023-46752 Patch and Mitigation

    An input‑validation bug in the FRRouting (FRR) BGP code — tracked as CVE‑2023‑46752 — allows specially crafted BGP UPDATE attributes (malformed MP_REACH_NLRI data) to crash the bgpd daemon, producing a denial‑of‑service condition for affected routers and appliances. Patches merged into upstream...
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