CVE-2024-20312 — NULL Pointer Dereference in Cisco IOS XE Software

CWE-476 — NULL Pointer Dereference4 documents4 sources
Severity
7.4HIGHNVD
EPSS
0.1%
top 83.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Cisco IOS XE SoftwareCisco IOSCisco IOS XE
Timeline
PublishedMar 27

Description

A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device after forming an adjacency. A successful exploit coul…

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 Packages4 packages

▶CVEListV5cisco/cisco_ios_xe_software385 versions+384
▶CVEListV5cisco/ios426 versions+425
▶NVDcisco/ios426 versions+425
▶NVDcisco/ios_xe385 versions+384

🔴Vulnerability Details

2
GHSA
GHSA-h59x-f52x-4wxj: A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unau↗2024-03-27
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CVEList
CVE-2024-20312: A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unau↗2024-03-27
▶

📋Vendor Advisories

1
Cisco
Cisco IOS and IOS XE Software Intermediate System-to-Intermediate System Denial of Service Vulnerability↗2024-03-27
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