CVE-2023-20049 — Buffer Access with Incorrect Length Value in Cisco IOS XR

CWE-805 — Buffer Access with Incorrect Length ValueCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer4 documents4 sources
Severity
7.5HIGHNVD
CNA8.6
EPSS
1.1%
top 21.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XRCisco IOS XR Software
Timeline
PublishedMar 9
Latest updateMar 10

Description

A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards whe…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDcisco/ios_xr7.6 — 7.6.2+2

🔴Vulnerability Details

2
GHSA
GHSA-3q76-jpjg-96ff: A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregatio↗2023-03-10
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CVEList
Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability↗2023-03-09
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability↗2023-03-08
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CVE-2023-20049 — Cisco IOS XR vulnerability | cvebase