MEDIUM✓ PATCH🇬🇧 English

CVE-2022-20849

CVSS 6.1v3.1pub. 2024-11-15upd. 2025-08-01

A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash. This vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .

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

  • Cisco Asr 9006

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9010

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9901

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9902

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9903

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9904

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9906

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9910

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9912

    HW
    Cisco
    wszystkie wersje

  • Cisco Asr 9922

    HW
    Cisco
    wszystkie wersje

  • Cisco IOS XR

    OS
    Cisco
    6.5.16.5.156.5.26.5.36.6.16.6.26.6.256.6.36.6.46.7.16.7.26.7.36.7.356.8.16.8.2+ 18 więcej

  • Cisco IOS Xrv 9000

    HW
    Cisco
    wszystkie wersje
🟢
PATCH DOSTĘPNY
Aktualizacja od producenta gotowa. Wdrożenie w ramach standardowego cyklu.
Tagi
DoS
CWE
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