CVE-2024-20436 — NULL Pointer Dereference in Cisco IOS XE Software

CWE-476 — NULL Pointer Dereference4 documents4 sources
Severity
7.5HIGHNVD
CNA8.6
EPSS
1.8%
top 17.27%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XE SoftwareCisco IOS XE
Timeline
PublishedSep 25

Description

A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a null pointer dereference when accessing specific URLs. An attacker could exploit this vulnerability by sending crafted HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload…

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

▶CVEListV5cisco/cisco_ios_xe_software201 versions+200
▶NVDcisco/ios_xe201 versions+200

🔴Vulnerability Details

2
CVEList
CVE-2024-20436: A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remo↗2024-09-25
▶
GHSA
GHSA-mm34-xr6q-46qf: A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remo↗2024-09-25
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XE Software HTTP Server Telephony Services Denial of Service Vulnerability↗2024-09-25
▶
CVE-2024-20436 — NULL Pointer Dereference in Cisco | cvebase