CVE-2024-20266 — NULL Pointer Dereference in Cisco IOS XR Software

CWE-476 — NULL Pointer Dereference4 documents4 sources
Severity
5.3MEDIUMNVD
EPSS
0.2%
top 60.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Cisco IOS XR Software
Timeline
PublishedMar 13

Description

A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the a…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 3.9 | Impact: 1.4

Affected Packages1 packages

▶CVEListV5cisco/cisco_ios_xr_software91 versions+90

🔴Vulnerability Details

2
GHSA
GHSA-v32f-g8j8-65f7: A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a cr↗2024-03-13
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CVEList
CVE-2024-20266: A vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a cr↗2024-03-13
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📋Vendor Advisories

1
Cisco
Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability↗2024-03-13
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CVE-2024-20266 — NULL Pointer Dereference in Cisco | cvebase