HIGH✓ PATCH🇵🇱 Wersja polska

CVE-2024-20303

CVSS 7.4v3.1pub. 2024-03-27upd. 2025-07-31

A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper management of mDNS client entries. An attacker could exploit this vulnerability by connecting to the wireless network and sending a continuous stream of specific mDNS packets. A successful exploit could allow the attacker to cause the wireless controller to have high CPU utilization, which could lead to access points (APs) losing their connection to the controller and result in a DoS condition.

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

  • Cisco Catalyst 9105axi

    HW
    Cisco
    all versions

  • Cisco Catalyst 9115axe

    HW
    Cisco
    all versions

  • Cisco Catalyst 9115axi

    HW
    Cisco
    all versions

  • Cisco Catalyst 9117axi

    HW
    Cisco
    all versions

  • Cisco Catalyst 9120axe

    HW
    Cisco
    all versions

  • Cisco Catalyst 9120axi

    HW
    Cisco
    all versions

  • Cisco Catalyst 9120axp

    HW
    Cisco
    all versions

  • Cisco Catalyst 9130axe

    HW
    Cisco
    all versions

  • Cisco Catalyst 9130axi

    HW
    Cisco
    all versions

  • Cisco Catalyst 9800 40

    HW
    Cisco
    all versions

  • Cisco Catalyst 9800 80

    HW
    Cisco
    all versions

  • Cisco Catalyst 9800 Cl Wireless Controllers For Cloud

    APP
    Cisco
    all versions

  • Cisco Catalyst 9800 L

    HW
    Cisco
    all versions

  • Cisco Catalyst Cw9800h1

    HW
    Cisco
    all versions

  • Cisco Catalyst Cw9800h2

    HW
    Cisco
    all versions

  • Cisco Catalyst Cw9800m

    HW
    Cisco
    all versions

  • Cisco IOS XE

    OS
    Cisco
    17.10.117.10.1a17.10.1b17.11.117.11.1a17.11.99sw17.2.117.2.1a17.2.1r17.2.1v17.2.217.2.317.3.117.3.1a17.3.1w+ 53 more
🟢
PATCH AVAILABLE
Vendor update available. Deploy in standard maintenance cycle.
Tags
DoS
CWE
References

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