CVE-2024-20309

Vulnérabilité moyenne dans Cisco IOS XE Software (Cisco)

CVSS 5.6 · Moyenne

EPSS 0.1%

Cisco•Cisco IOS XE Software•Versions : 3.18.5SP, 3.13.7S, 3.5.4SQ, 17.2.1v, 16.6.3, 16.6.4a, 17.7.2, 3.3.5SE, 16.2.2, 17.6.1z, 17.12.1a, 3.8.0S, 3.18.1cSP, 17.12.2a, 3.6.9E, 16.10.1s, 3.13.5S, 16.7.1a, 17.8.1, 3.5.7SQ, 16.8.1b, 17.11.1, 16.12.3s, 16.6.6, 3.17.2S, 16.6.7, 3.2.0SE, 16.9.1a, 16.8.1e, 16.12.2, 17.8.1a, 16.12.1z2, 3.12.4S, 17.3.8, 16.1.3, 3.18.2aSP, 17.9.1x1, 17.3.6, 3.12.0aS, 17.9.1y1, 16.2.1, 16.6.5a, 17.6.3, 16.12.1s, 3.18.3bSP, 16.12.3, 16.3.11, 16.12.4, 3.16.6bS, 3.6.2E, 16.4.2, 16.10.1c, 3.17.0S, 3.16.0S, 17.6.4, 16.12.1w, 3.11.4S, 3.13.2S, 16.7.2, 16.12.1x, 16.11.1s, 3.16.4S, 3.15.4S, 17.6.1z1, 17.3.8a, 3.13.0aS, 16.5.1b, 3.13.2aS, 17.1.1s, 16.10.1b, 3.4.0SQ, 3.18.1S, 16.6.5, 17.7.1a, 16.8.1a, 3.7.1S, 3.9.1aS, 17.6.1, 3.7.2tS, 17.4.1, 3.18.0S, 3.15.1S, 16.12.8, 17.3.4c, 3.16.7bS, 17.3.4, 17.6.6a, 3.10.3S, 3.4.1SQ, 16.3.6, 17.2.1, 3.5.3SQ, 3.2.1SE, 17.2.1r, 16.3.7, 16.7.3, 3.11.1S, 3.9.0S, 3.13.1S, 3.3.1SE, 16.6.8, 17.3.2a, 17.3.5a, 17.9.1y, 16.12.6a, 3.7.7S, 3.10.8aS, 17.9.1, 3.13.7aS, 3.9.1S, 16.7.1, 16.12.1a, 17.1.3, 16.1.2, 17.9.3, 16.12.1y, 16.8.1, 3.15.1cS, 17.10.1b, 17.6.1x, 17.9.2a, 3.7.0S, 3.16.6S, 3.16.4bS, 16.3.4, 16.11.2, 17.3.7, 16.9.2, 16.12.2s, 17.9.2, 16.8.1s, 16.10.1g, 16.8.2, 17.3.1x, 17.7.1, 17.6.1a, 3.7.1aS, 16.12.5b, 3.8.2S, 3.10.1S, 3.16.10S, 17.10.1, 16.10.3, 3.13.4S, 3.10.5S, 3.10.1xbS, 3.16.2S, 3.10.6S, 17.6.3a, 17.6.1y, 16.9.4, 3.16.3S, 3.9.2S, 16.9.6, 16.6.1, 3.13.6aS, 17.2.2, 16.12.1z1, 3.16.3aS, 3.3.2SE, 17.9.4, 3.7.3S, 3.17.1S, 3.16.1aS, 17.3.5, 17.11.1a, 3.3.1SQ, 16.9.1b, 3.18.4S, 17.6.1w, 3.13.3S, 16.10.1e, 17.1.1t, 3.16.9S, 3.9.0aS, 3.7.4aS, 3.14.4S, 3.15.3S, 3.13.10S, 3.17.3S, 16.12.5, 3.6.5bE, 3.3.0SQ, 16.10.1a, 3.7.2S, 16.3.8, 16.8.1d, 3.15.0S, 17.6.5a, 3.16.1S, 17.4.1b, 3.18.7SP, 3.5.8SQ, 17.9.3a, 17.2.1a, 3.7.5S, 3.3.4SE, 3.10.9S, 3.10.10S, 17.11.99SW, 17.2.3, 16.3.5b, 17.9.1a, 3.18.3aSP, 16.9.8, 3.18.2S, 3.8.1S, 16.9.5f, 3.2.2SE, 3.18.9SP, 16.5.1, 16.9.5, 3.12.1S, 3.11.2S, 16.1.1, 3.5.1SQ, 16.12.2a, 17.4.1a, 16.12.1c, 16.12.9, 16.12.10, 3.18.2SP, 16.11.1a, 3.10.7S, 16.7.1b, 3.16.0cS, 17.3.5b, 3.11.0S, 16.6.10, 16.3.5, 3.14.2S, 3.16.4dS, 3.18.8aSP, 3.16.2bS, 3.18.3S, 17.4.2a, 3.17.1aS, 3.12.3S, 3.18.0SP, 16.10.1d, 16.6.9, 3.18.1SP, 3.16.7S, 3.6.2aE, 16.12.5a, 16.5.3, 3.13.6S, 17.9.1w, 16.9.1s, 16.9.3, 16.5.1a, 3.5.6SQ, 16.6.2, 17.9.1x, 16.10.1f, 16.7.4, 16.3.1, 3.16.7aS, 17.6.6, 16.12.6, 16.12.1, 17.12.2, 3.7.6S, 3.16.8S, 16.5.2, 3.2.3SE, 3.10.2tS, 16.12.10a, 16.4.1, 16.10.1, 3.13.5aS, 3.13.0S, 3.12.0S, 16.3.2, 3.7.4S, 3.16.5S, 16.10.2, 17.6.5, 3.10.2S, 16.8.1c, 17.9.4a, 3.17.4S, 16.12.1t, 3.6.7bE, 16.9.1, 16.3.3, 16.9.7, 16.3.9, 17.3.4a, 3.6.10E, 17.12.1, 3.16.4aS, 17.3.2, 16.12.7, 17.4.2, 17.1.1, 3.14.3S, 17.12.1w, 3.14.1S, 17.5.1, 3.3.3SE, 17.1.1a, 3.10.4S, 3.7.0bS, 3.18.1bSP, 3.13.9S, 3.15.2S, 3.18.4SP, 16.3.10, 16.4.3, 3.18.1aSP, 3.18.3SP, 16.12.4a, 3.10.8S, 16.12.3a, 3.18.6SP, 17.3.1a, 3.3.0SE, 16.9.3a, 3.18.0aS, 17.6.2, 16.11.1b, 3.12.2S, 3.11.3S, 3.5.2SQ, 16.11.1, 3.13.8S, 16.8.3, 3.10.0S, 17.3.1z, 17.5.1a, 3.14.0S, 16.3.1a, 17.3.4b, 17.3.1w, 17.3.3, 3.5.0SQ, 17.7.1b, 3.5.5SQ, 17.10.1a, 16.6.4, 3.16.2aS, 17.3.1

Description

A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding. This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.

Gravité et risque d'exploitation

CVE-2024-20309 obtient un score CVSS de 5.6/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.10 %, ce qui la place devant 0.9 % des CVE référencées.

Que faire ?

Vérifiez si Cisco IOS XE Software (versions 3.18.5SP, 3.13.7S, 3.5.4SQ, 17.2.1v, 16.6.3, 16.6.4a, 17.7.2, 3.3.5SE, 16.2.2, 17.6.1z, 17.12.1a, 3.8.0S, 3.18.1cSP, 17.12.2a, 3.6.9E, 16.10.1s, 3.13.5S, 16.7.1a, 17.8.1, 3.5.7SQ, 16.8.1b, 17.11.1, 16.12.3s, 16.6.6, 3.17.2S, 16.6.7, 3.2.0SE, 16.9.1a, 16.8.1e, 16.12.2, 17.8.1a, 16.12.1z2, 3.12.4S, 17.3.8, 16.1.3, 3.18.2aSP, 17.9.1x1, 17.3.6, 3.12.0aS, 17.9.1y1, 16.2.1, 16.6.5a, 17.6.3, 16.12.1s, 3.18.3bSP, 16.12.3, 16.3.11, 16.12.4, 3.16.6bS, 3.6.2E, 16.4.2, 16.10.1c, 3.17.0S, 3.16.0S, 17.6.4, 16.12.1w, 3.11.4S, 3.13.2S, 16.7.2, 16.12.1x, 16.11.1s, 3.16.4S, 3.15.4S, 17.6.1z1, 17.3.8a, 3.13.0aS, 16.5.1b, 3.13.2aS, 17.1.1s, 16.10.1b, 3.4.0SQ, 3.18.1S, 16.6.5, 17.7.1a, 16.8.1a, 3.7.1S, 3.9.1aS, 17.6.1, 3.7.2tS, 17.4.1, 3.18.0S, 3.15.1S, 16.12.8, 17.3.4c, 3.16.7bS, 17.3.4, 17.6.6a, 3.10.3S, 3.4.1SQ, 16.3.6, 17.2.1, 3.5.3SQ, 3.2.1SE, 17.2.1r, 16.3.7, 16.7.3, 3.11.1S, 3.9.0S, 3.13.1S, 3.3.1SE, 16.6.8, 17.3.2a, 17.3.5a, 17.9.1y, 16.12.6a, 3.7.7S, 3.10.8aS, 17.9.1, 3.13.7aS, 3.9.1S, 16.7.1, 16.12.1a, 17.1.3, 16.1.2, 17.9.3, 16.12.1y, 16.8.1, 3.15.1cS, 17.10.1b, 17.6.1x, 17.9.2a, 3.7.0S, 3.16.6S, 3.16.4bS, 16.3.4, 16.11.2, 17.3.7, 16.9.2, 16.12.2s, 17.9.2, 16.8.1s, 16.10.1g, 16.8.2, 17.3.1x, 17.7.1, 17.6.1a, 3.7.1aS, 16.12.5b, 3.8.2S, 3.10.1S, 3.16.10S, 17.10.1, 16.10.3, 3.13.4S, 3.10.5S, 3.10.1xbS, 3.16.2S, 3.10.6S, 17.6.3a, 17.6.1y, 16.9.4, 3.16.3S, 3.9.2S, 16.9.6, 16.6.1, 3.13.6aS, 17.2.2, 16.12.1z1, 3.16.3aS, 3.3.2SE, 17.9.4, 3.7.3S, 3.17.1S, 3.16.1aS, 17.3.5, 17.11.1a, 3.3.1SQ, 16.9.1b, 3.18.4S, 17.6.1w, 3.13.3S, 16.10.1e, 17.1.1t, 3.16.9S, 3.9.0aS, 3.7.4aS, 3.14.4S, 3.15.3S, 3.13.10S, 3.17.3S, 16.12.5, 3.6.5bE, 3.3.0SQ, 16.10.1a, 3.7.2S, 16.3.8, 16.8.1d, 3.15.0S, 17.6.5a, 3.16.1S, 17.4.1b, 3.18.7SP, 3.5.8SQ, 17.9.3a, 17.2.1a, 3.7.5S, 3.3.4SE, 3.10.9S, 3.10.10S, 17.11.99SW, 17.2.3, 16.3.5b, 17.9.1a, 3.18.3aSP, 16.9.8, 3.18.2S, 3.8.1S, 16.9.5f, 3.2.2SE, 3.18.9SP, 16.5.1, 16.9.5, 3.12.1S, 3.11.2S, 16.1.1, 3.5.1SQ, 16.12.2a, 17.4.1a, 16.12.1c, 16.12.9, 16.12.10, 3.18.2SP, 16.11.1a, 3.10.7S, 16.7.1b, 3.16.0cS, 17.3.5b, 3.11.0S, 16.6.10, 16.3.5, 3.14.2S, 3.16.4dS, 3.18.8aSP, 3.16.2bS, 3.18.3S, 17.4.2a, 3.17.1aS, 3.12.3S, 3.18.0SP, 16.10.1d, 16.6.9, 3.18.1SP, 3.16.7S, 3.6.2aE, 16.12.5a, 16.5.3, 3.13.6S, 17.9.1w, 16.9.1s, 16.9.3, 16.5.1a, 3.5.6SQ, 16.6.2, 17.9.1x, 16.10.1f, 16.7.4, 16.3.1, 3.16.7aS, 17.6.6, 16.12.6, 16.12.1, 17.12.2, 3.7.6S, 3.16.8S, 16.5.2, 3.2.3SE, 3.10.2tS, 16.12.10a, 16.4.1, 16.10.1, 3.13.5aS, 3.13.0S, 3.12.0S, 16.3.2, 3.7.4S, 3.16.5S, 16.10.2, 17.6.5, 3.10.2S, 16.8.1c, 17.9.4a, 3.17.4S, 16.12.1t, 3.6.7bE, 16.9.1, 16.3.3, 16.9.7, 16.3.9, 17.3.4a, 3.6.10E, 17.12.1, 3.16.4aS, 17.3.2, 16.12.7, 17.4.2, 17.1.1, 3.14.3S, 17.12.1w, 3.14.1S, 17.5.1, 3.3.3SE, 17.1.1a, 3.10.4S, 3.7.0bS, 3.18.1bSP, 3.13.9S, 3.15.2S, 3.18.4SP, 16.3.10, 16.4.3, 3.18.1aSP, 3.18.3SP, 16.12.4a, 3.10.8S, 16.12.3a, 3.18.6SP, 17.3.1a, 3.3.0SE, 16.9.3a, 3.18.0aS, 17.6.2, 16.11.1b, 3.12.2S, 3.11.3S, 3.5.2SQ, 16.11.1, 3.13.8S, 16.8.3, 3.10.0S, 17.3.1z, 17.5.1a, 3.14.0S, 16.3.1a, 17.3.4b, 17.3.1w, 17.3.3, 3.5.0SQ, 17.7.1b, 3.5.5SQ, 17.10.1a, 16.6.4, 3.16.2aS, 17.3.1) est présent sur votre parc.
Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aux-333WBz8f