PT-2023-9644 · Cisco · Cisco Ios Xe

Published 2023-11-08 · Updated 2024-10-08 · CVE-2024-20436

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

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, causing a DoS condition on the affected device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2024-09169

CVE-2024-20436

Affected Products

Cisco Ios Xe

References · 10

• https://osv.dev/vulnerability/CVE-2024-20436 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-httpsrvr-dos-yOZThut · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-20436 · Security Note
• https://bdu.fstec.ru/vul/2024-09169 · Security Note
• https://twitter.com/CVEnew/status/1838983837319143555 · Twitter Post
• https://twitter.com/CCBalert/status/1840772320832397390 · Twitter Post
• https://t.me/cvedetector/6347 · Telegram Post
• https://t.me/cvenotify/97536 · Telegram Post
• https://twitter.com/CveFindCom/status/1838987475596755164 · Twitter Post
• https://vuldb.com/ru/?id.278491 · Note