CVE-2024-20327

CWE-20 — Improper Input Validation4 documents4 sources

Severity

7.4HIGH

EPSS

0.1%

top 78.92%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Cisco IOS XR Cisco Cisco IOS XR Software

Timeline

PublishedMar 13

Description

A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Ligh…

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 2.8 | Impact: 4.0

Affected Packages2 packages

▶CVEListV5cisco/cisco_ios_xr_software61 versions+60

▶NVDcisco/ios_xr7.10 — 7.10.1+2

🔴Vulnerability Details

GHSA

GHSA-2295-7pf8-fmwg: A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers c↗2024-03-13

▶

CVEList

CVE-2024-20327: A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers c↗2024-03-13

▶

📋Vendor Advisories

Cisco

Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers PPPoE Denial of Service Vulnerability↗2024-03-13

▶