CVE-2025-43972
MEDIUM6.8EPSS 0.03%GoBGP crashes in the flowspec parser in github.com/osrg/gobgp
Published: 4/21/2025Modified: 4/28/2026
Description
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.
Affected packages (5)
- Debian/gobgpfrom 0
- Go/github.com/osrg/gobgpfrom 0
- Go/github.com/osrg/gobgpfrom 0
- Go/github.com/osrg/gobgp/v3from 0, < 3.35.0
- Go/github.com/osrg/gobgp/v3from 0, < 3.35.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |
References (6)
- ADVISORYhttps://github.com/advisories/GHSA-mfvv-mgf6-q25r
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-43972
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-43972
- PATCHhttps://github.com/osrg/gobgp
- WEBhttps://github.com/osrg/gobgp/commit/ca7383f450f7b296c5389feceef2467de5ab6e5a
- WEBhttps://github.com/osrg/gobgp/compare/v3.34.0...v3.35.0