CVE-2025-43973 json
GoBGP does not verify that the input length
published 2025-04-21 18 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-12347 , GHSA-c5jg-wr5v-2wp2 , GO-2025-3633
- cvss
- 6.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
An issue was discovered in GoBGP before 3.35.0. pkg/packet/rtr/rtr.go does not verify that the input length corresponds to a situation in which all bytes are available for an RTR message.
Patch / fix
- go github.com/osrg/gobgp/v3 3.35.0
- GoBGP GoBGP 3.35.0
- gobgp Debian 14, Debian 13 3.35.0-1
debian advisories DEBIAN-CVE-2025-43973
- gobgp Ubuntu Pro 18.04 LTS 1.29-1ubuntu0.1+esm1
- gobgp Ubuntu Pro 20.04 LTS 2.12.0-1ubuntu0.1~esm2
- gobgp Ubuntu Pro 22.04 LTS 2.25.0-3ubuntu0.1+esm2
- gobgp Ubuntu Pro 24.04 LTS 3.23.0-1ubuntu0.3+esm2
ubuntu advisories UBUNTU-CVE-2025-43973
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250422T181640-1.1
opensuse advisories openSUSE-SU-2025:15017-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |
| GitHub | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/osrg/gobgp | all versions |
no fix listed |
| go | github.com/osrg/gobgp/v3 | <3.35.0 |
3.35.0 |
Affected products
- GoBGP GoBGP
Classification
- Weakness
-
- CWE-193 Off-by-one Error
References
-
github.com
/osrg/gobgp/commit/5693c58a4815cc6327b8d3b6980f0e5aced28abe
web, patch
-
github.com
/osrg/gobgp/compare/v3.34.0...v3.35.0
web, patch, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2025-43973
advisory
-
github.com
/osrg/gobgp
package
-
github.com
/advisories/GHSA-c5jg-wr5v-2wp2
advisory
Sources
- CVE List CVE-2025-43973
- GitHub Advisory GHSA-c5jg-wr5v-2wp2
- NVD CVE-2025-43973
- OSV GO-2025-3633
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.