Vulnerability-Lookup

BDU:2026-14528 (CVE-2026-41643)

Vulnerability from fstec – Published: 2026-09-11 – Updated: 2026-09-11 – View on bdu.fstec.ru Exploit publicly available Fixed

Title

Уязвимость функции UpdatePathAttrs4ByteAs() файла internal/pkg/table/message.go протокола пограничного шлюза GoBGP, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость функции UpdatePathAttrs4ByteAs() файла internal/pkg/table/message.go протокола пограничного шлюза GoBGP связана с непроверенным индексированием массива. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity

7.8 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 (High) CVSS 3.1


                      
                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation, Injection

Incidents

Being clarified

Remediation

Software update

CWE

CWE-74 - Неверная нейтрализация особых элементов в выходных данных, используемых входящим компонентом («инъекция»)
CWE-94 - Неверное управление генерацией кода (Внедрение кода)
CWE-129 - Непроверенное индексирование массива

Aliases

CVE-2026-41643, GHSA-8RXH-R2P6-7F2Q

References

9 references

URL
https://github.com/advisories/GHSA-8rxh-r2p6-7f2q
https://github.com/osrg/gobgp
https://github.com/osrg/gobgp/releases/tag/v4.3.0
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
https://security-tracker.debian.org/tracker/CVE-2026-41643
https://deb.freexian.com/extended-lts/tracker/CVE-2026-41643
https://ubuntu.com/security/CVE-2026-41643
http://repo.red-soft.ru/redos/7.3c/x86_64/updates/
http://repo.red-soft.ru/redos/8.0/x86_64/updates/

Impacted products

4 products from 4 vendors

Vendors

Сообщество свободного программного обеспечения, Canonical Ltd., ООО «Ред Софт», OSRG

Products

Debian GNU/Linux, Ubuntu, РЕД ОС (запись в едином реестре российских программ №3751), GoBGP

Versions

9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (РЕД ОС), 22.04 LTS (Ubuntu), 24.04 LTS (Ubuntu), 13 (Debian GNU/Linux), 8.0 (РЕД ОС), 26.04 LTS (Ubuntu), до 4.3.0 (GoBGP)

Product types

Operating system, Application software

Platforms

Сообщество свободного программного обеспечения Debian GNU/Linux 9, Canonical Ltd. Ubuntu 18.04 LTS, Canonical Ltd. Ubuntu 20.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), Canonical Ltd. Ubuntu 22.04 LTS, Canonical Ltd. Ubuntu 24.04 LTS, Сообщество свободного программного обеспечения Debian GNU/Linux 13, ООО «Ред Софт» РЕД ОС 8.0 (запись в едином реестре российских программ №3751), Canonical Ltd. Ubuntu 26.04 LTS

Mitigations

В условиях отсутствия обновлений безопасности от производителя рекомендуется придерживаться "Рекомендаций по безопасной настройке операционных систем LINUX", изложенных в методическом документе ФСТЭК России, утверждённом 25 декабря 2022 года. Использование рекомендаций: Для GoBGP: https://github.com/osrg/gobgp/releases/tag/v4.3.0 https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q Для Ред ОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ http://repo.red-soft.ru/redos/8.0/x86_64/updates/ Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2026-41643 https://deb.freexian.com/extended-lts/tracker/CVE-2026-41643 Для Ubuntu: https://ubuntu.com/security/CVE-2026-41643

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, Canonical Ltd., \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, OSRG",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 20.04 LTS (Ubuntu), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (\u0420\u0415\u0414 \u041e\u0421), 22.04 LTS (Ubuntu), 24.04 LTS (Ubuntu), 13 (Debian GNU/Linux), 8.0 (\u0420\u0415\u0414 \u041e\u0421), 26.04 LTS (Ubuntu), \u0434\u043e 4.3.0 (GoBGP)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0412 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \"\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c LINUX\", \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0432 \u043c\u0435\u0442\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0435 \u0424\u0421\u0422\u042d\u041a \u0420\u043e\u0441\u0441\u0438\u0438, \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c 25 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430.\n\n\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f GoBGP:\nhttps://github.com/osrg/gobgp/releases/tag/v4.3.0\nhttps://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q\n\n\u0414\u043b\u044f \u0420\u0435\u0434 \u041e\u0421: \nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2026-41643\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-41643\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2026-41643",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "22.04.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "11.09.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "11.09.2026",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2026-14528",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2026-41643, GHSA-8rxh-r2p6-7f2q",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Debian GNU/Linux, Ubuntu, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), GoBGP",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 9 , Canonical Ltd. Ubuntu 18.04 LTS , Canonical Ltd. Ubuntu 20.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Canonical Ltd. Ubuntu 22.04 LTS , Canonical Ltd. Ubuntu 24.04 LTS , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 13 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 8.0  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Canonical Ltd. Ubuntu 26.04 LTS ",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 UpdatePathAttrs4ByteAs() \u0444\u0430\u0439\u043b\u0430 internal/pkg/table/message.go \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u043f\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u0433\u043e \u0448\u043b\u044e\u0437\u0430 GoBGP, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0432\u0435\u0440\u043d\u0430\u044f \u043d\u0435\u0439\u0442\u0440\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u043e\u0441\u043e\u0431\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u0432 \u0432\u044b\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u043c (\u00ab\u0438\u043d\u044a\u0435\u043a\u0446\u0438\u044f\u00bb) (CWE-74), \u041d\u0435\u0432\u0435\u0440\u043d\u043e\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u0434\u0430 (\u0412\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430) (CWE-94), \u041d\u0435\u043f\u0440\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u043e\u0435 \u0438\u043d\u0434\u0435\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043c\u0430\u0441\u0441\u0438\u0432\u0430 (CWE-129)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 UpdatePathAttrs4ByteAs() \u0444\u0430\u0439\u043b\u0430 internal/pkg/table/message.go \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 \u043f\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u0433\u043e \u0448\u043b\u044e\u0437\u0430 GoBGP \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043f\u0440\u043e\u0432\u0435\u0440\u0435\u043d\u043d\u044b\u043c \u0438\u043d\u0434\u0435\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043c\u0430\u0441\u0441\u0438\u0432\u0430. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445, \u0418\u043d\u044a\u0435\u043a\u0446\u0438\u044f",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://github.com/advisories/GHSA-8rxh-r2p6-7f2q\nhttps://github.com/osrg/gobgp\nhttps://github.com/osrg/gobgp/releases/tag/v4.3.0\nhttps://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q\nhttps://security-tracker.debian.org/tracker/CVE-2026-41643\nhttps://deb.freexian.com/extended-lts/tracker/CVE-2026-41643\nhttps://ubuntu.com/security/CVE-2026-41643\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\nhttp://repo.red-soft.ru/redos/8.0/x86_64/updates/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-74, CWE-94, CWE-129",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)"
}

CVE-2026-41643 (GCVE-0-2026-41643)

Vulnerability from cvelistv5 – Published: 2026-05-07 11:53 – Updated: 2026-05-07 13:39

Title

GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE

Summary

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-07 13:38 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7614 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/osrg/gobgp/security/advisories…	x_refsource_CONFIRM
https://github.com/osrg/gobgp/releases/tag/v4.3.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
osrg	gobgp	Affected: < 4.3.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41643",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-07T13:38:29.253036Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-07T13:39:04.425Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "gobgp",
          "vendor": "osrg",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.3.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-129",
              "description": "CWE-129: Improper Validation of Array Index",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T11:53:23.566Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q"
        },
        {
          "name": "https://github.com/osrg/gobgp/releases/tag/v4.3.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/osrg/gobgp/releases/tag/v4.3.0"
        }
      ],
      "source": {
        "advisory": "GHSA-8rxh-r2p6-7f2q",
        "discovery": "UNKNOWN"
      },
      "title": "GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41643",
    "datePublished": "2026-05-07T11:53:23.566Z",
    "dateReserved": "2026-04-21T23:58:43.802Z",
    "dateUpdated": "2026-05-07T13:39:04.425Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-8RXH-R2P6-7F2Q

Vulnerability from github – Published: 2026-04-29 20:44 – Updated: 2026-05-08 20:42

Summary

GoBGP has Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE

Details

Summary

A remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled.

Details

The vulnerability is located in internal/pkg/table/message.go within the UpdatePathAttrs4ByteAs function.

When GoBGP processes a BGP UPDATE message containing both an AS_PATH and an AS4_PATH attribute, it attempts to merge or validate them to support 4-byte AS numbers. If the attributes are ordered such that AS4_PATH (Type 17) appears before AS_PATH (Type 2), and the AS4_PATH is deemed invalid/malformed, the code attempts to remove the AS4_PATH attribute from the msg.PathAttributes slice. It appears the crash happens due to an index shift in msg.PathAttributes:

#GoBGP v4.2.0
// Line 112: If AS4_PATH precedes AS_PATH, the deletion causes all subsequent attributes to shift left.
msg.PathAttributes = append(msg.PathAttributes[:as4AttrPos], msg.PathAttributes[as4AttrPos+1:]...)

// Line 206: The stale asAttrPos index is used here.
//The function continues to use the stale index (asAttrPos) to update the AS_PATH. Since the slice length has decreased, accessing the old index leads to a panic.
msg.PathAttributes[asAttrPos] = bgp.NewPathAttributeAsPath(newIntfParams)

This deletion causes all subsequent attributes in the slice to shift left by one position. However, the function continues to use the original asAttrPos index (calculated before the deletion) to access or modify the AS_PATH attribute later at Line 206. Because the slice is now shorter, the "stale" index points out of bounds, triggering a panic and crashing the entire GoBGP process.

PoC

Environment: * GoBGP version: 4.2.0 Configuration: Passive peering enabled. Reproduction Steps: Configure GoBGP with a neighbor (e.g., 192.168.31.195). Send a specially crafted BGP UPDATE hex payload:

ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
00 22 02
00 00                  # Withdrawn Routes Length
00 0b                  # Total Path Attribute Length
40 11 01 02            # AS4_PATH (Type 17, Len 1, Val 02) - Triggers the bug
40 02 04 ff ff de ad   # AS_PATH (Type 2, Len 4)

The GoBGP process will immediately crash with: panic: runtime error: index out of range [1] with length 1.

Impact

Vulnerability Type: Remote Denial of Service (DoS). Impacted Users: Any GoBGP deployment (v4.2.0 and earlier) that accepts BGP UPDATE messages from peers. Since this crash occurs in the FSM (Finite State Machine) handling loop, a single malicious peer or a malformed route propagated through a transit provider can consistently crash the BGP daemon, leading to a complete loss of routing capabilities.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.2.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/osrg/gobgp/v4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41643"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-29T20:44:04Z",
    "nvd_published_at": "2026-05-07T12:16:17Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nA remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled.\n\n### Details\nThe vulnerability is located in internal/pkg/table/message.go within the UpdatePathAttrs4ByteAs function.\n\nWhen GoBGP processes a BGP UPDATE message containing both an AS_PATH and an AS4_PATH attribute, it attempts to merge or validate them to support 4-byte AS numbers. If the attributes are ordered such that AS4_PATH (Type 17) appears before AS_PATH (Type 2), and the AS4_PATH is deemed invalid/malformed, the code attempts to remove the AS4_PATH attribute from the msg.PathAttributes slice.\nIt appears the crash happens due to an index shift in msg.PathAttributes:\n```\n#GoBGP v4.2.0\n// Line 112: If AS4_PATH precedes AS_PATH, the deletion causes all subsequent attributes to shift left.\nmsg.PathAttributes = append(msg.PathAttributes[:as4AttrPos], msg.PathAttributes[as4AttrPos+1:]...)\n\n// Line 206: The stale asAttrPos index is used here.\n//The function continues to use the stale index (asAttrPos) to update the AS_PATH. Since the slice length has decreased, accessing the old index leads to a panic.\nmsg.PathAttributes[asAttrPos] = bgp.NewPathAttributeAsPath(newIntfParams)\n```\nThis deletion causes all subsequent attributes in the slice to shift left by one position. However, the function continues to use the original asAttrPos index (calculated before the deletion) to access or modify the AS_PATH attribute later at [Line 206](https://www.google.com/search?q=https://github.com/osrg/gobgp/blob/v4.2.0/internal/pkg/table/message.go%23L206). Because the slice is now shorter, the \"stale\" index points out of bounds, triggering a panic and crashing the entire GoBGP process.\n### PoC\nEnvironment: * GoBGP version: 4.2.0\nConfiguration: Passive peering enabled.\nReproduction Steps:\nConfigure GoBGP with a neighbor (e.g., 192.168.31.195).\nSend a specially crafted BGP UPDATE hex payload:\n```\nff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff\n00 22 02\n00 00                  # Withdrawn Routes Length\n00 0b                  # Total Path Attribute Length\n40 11 01 02            # AS4_PATH (Type 17, Len 1, Val 02) - Triggers the bug\n40 02 04 ff ff de ad   # AS_PATH (Type 2, Len 4)\n```\nThe GoBGP process will immediately crash with: panic: runtime error: index out of range [1] with length 1.\n\n### Impact\nVulnerability Type: Remote Denial of Service (DoS).\nImpacted Users: Any GoBGP deployment (v4.2.0 and earlier) that accepts BGP UPDATE messages from peers. Since this crash occurs in the FSM (Finite State Machine) handling loop, a single malicious peer or a malformed route propagated through a transit provider can consistently crash the BGP daemon, leading to a complete loss of routing capabilities.",
  "id": "GHSA-8rxh-r2p6-7f2q",
  "modified": "2026-05-08T20:42:30Z",
  "published": "2026-04-29T20:44:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41643"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/osrg/gobgp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/osrg/gobgp/releases/tag/v4.3.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "GoBGP has Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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BDU:2026-14528 (CVE-2026-41643)

CVE-2026-41643 (GCVE-0-2026-41643)

GHSA-8RXH-R2P6-7F2Q

Summary

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Impact

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Related by attack behaviour