| Titolo | osrg GoBGP 4.3.0 Off-by-one Error |
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| Descrizione | An off-by-one vulnerability was found in osrg GoBGP version 4.3.0. This vulnerability affects the CapSoftwareVersion.DecodeFromBytes function in the pkg/packet/bgp/bgp.go file. The root cause is an incorrect slice boundary calculation when extracting the Software Version string from a BGP OPEN capability payload. Because the Go slice upper bound is improperly calculated (using data[1:c.SoftwareVersionLen] instead of the correct data[1:1+c.SoftwareVersionLen]), the parser reads one byte fewer than intended. This causes the decoded Software Version string to be truncated, resulting in an inconsistency with the original encoded representation. |
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| Fonte | ⚠️ https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800f |
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| Utente | Sunxj (UID 96442) |
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| Sottomissione | 14/03/2026 11:28 (5 mesi fa) |
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| Moderazione | 30/03/2026 09:50 (16 days later) |
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| Stato | Accettato |
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| Voce VulDB | 354155 [osrg GoBGP fino a 4.3.0 pkg/packet/bgp/bgp.go DecodeFromBytes data[1] buffer overflow] |
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| Punti | 20 |
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