PT-2024-2146 · Cisco · Cisco Ios Xr

Published 2024-03-13 · Updated 2024-04-09 · CVE-2024-20318

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software (affected versions not specified)

Description A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition. This issue is due to the incorrect handling of specific Ethernet frames received on line cards with the Layer 2 services feature enabled. An attacker could exploit this by sending specific Ethernet frames through an affected device, potentially causing the ingress interface network processor to reset and resulting in a loss of traffic over the supported interfaces. Multiple resets could cause the line card to reset, leading to a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2024-02055

CVE-2024-20318

Affected Products

Cisco Ios Xr

References · 6

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrl2vpn-jesrU3fc · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-02055 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-20318 · Security Note
• https://twitter.com/Action1corp/status/1777753712640864315 · Twitter Post
• https://twitter.com/CVEnew/status/1767962574975324439 · Twitter Post
• https://t.me/true_secator/5530 · Telegram Post