CVE-2021-34713 — Cisco IOS XR vulnerability

CWE-3994 documents4 sources
Severity
7.4HIGHNVD
EPSS
0.1%
top 72.19%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XRCisco IOS XR Software
Timeline
PublishedSep 9
Latest updateMay 24

Description

A vulnerability in the Layer 2 punt code of Cisco IOS XR Software running on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to cause the affected line card to reboot. This vulnerability is due to incorrect handling of specific Ethernet frames that cause a spin loop that can make the network processors unresponsive. An attacker could exploit this vulnerability by sending specific types of Ethernet frames on the segment where the affected line …

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

▶NVDcisco/ios_xr6.4 — 6.6.3+3

🔴Vulnerability Details

2
GHSA
GHSA-ggcm-cr9q-hv99: A vulnerability in the Layer 2 punt code of Cisco IOS XR Software running on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthe↗2022-05-24
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CVEList
Cisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability↗2021-09-09
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📋Vendor Advisories

1
Cisco
Cisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability↗2021-09-08
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CVE-2021-34713 — Cisco IOS XR vulnerability | cvebase