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CVE-2024-20436

Oct. 8, 2024, 9 p.m.

CVSS Score

7.5 / 10

Products Impacted

Vendor Product Versions
cisco
  • ios_xe
  • 3.9.0as, 3.9.1s, 3.9.2s, 3.10.0s, 3.10.1s, 3.10.2s, 3.10.2ts, 3.10.3s, 3.10.4s, 3.10.5s, 3.10.6s, 3.10.7s, 3.10.8as, 3.10.8s, 3.10.9s, 3.10.10s, 3.11.0s, 3.11.1s, 3.11.2s, 3.11.3s, 3.11.4s, 3.12.0s, 3.12.1s, 3.12.2s, 3.12.3s, 3.12.4s, 3.13.0s, 3.13.1s, 3.13.2s, 3.13.3s, 3.13.4s, 3.13.5s, 3.13.6as, 3.13.6s, 3.13.7s, 3.13.8s, 3.13.9s, 3.13.10s, 3.14.0s, 3.14.1s, 3.14.2s, 3.14.3s, 3.14.4s, 3.15.0s, 3.15.1cs, 3.15.1s, 3.15.2s, 3.15.3s, 3.15.4s, 3.16.0cs, 3.16.0s, 3.16.1as, 3.16.2s, 3.16.3s, 3.16.4as, 3.16.4bs, 3.16.4ds, 3.16.5s, 3.16.6bs, 3.16.6s, 3.16.7as, 3.16.7bs, 3.16.7s, 3.16.8s, 3.16.9s, 3.16.10s, 3.17.0s, 3.17.1s, 3.17.2s, 3.17.3s, 3.17.4s, 3.18.2asp, 16.2.1, 16.2.2, 16.3.1, 16.3.1a, 16.3.2, 16.3.3, 16.3.4, 16.3.5, 16.3.6, 16.3.7, 16.3.8, 16.3.9, 16.3.10, 16.3.11, 16.4.1, 16.4.2, 16.4.3, 16.5.1, 16.5.1b, 16.5.2, 16.5.3, 16.6.1, 16.6.2, 16.6.3, 16.6.4, 16.6.5, 16.6.6, 16.6.7, 16.6.8, 16.6.9, 16.6.10, 16.7.1, 16.7.2, 16.7.3, 16.8.1, 16.8.1s, 16.8.2, 16.8.3, 16.9.1, 16.9.1s, 16.9.2, 16.9.3, 16.9.4, 16.9.5, 16.9.6, 16.9.7, 16.9.8, 16.10.1, 16.10.1a, 16.10.1b, 16.10.1e, 16.10.1s, 16.10.2, 16.10.3, 16.11.1, 16.11.1a, 16.11.1b, 16.11.1s, 16.11.2, 16.12.1, 16.12.1a, 16.12.1c, 16.12.1s, 16.12.2, 16.12.2s, 16.12.3, 16.12.3s, 16.12.4, 16.12.4a, 16.12.5, 16.12.6, 16.12.7, 16.12.8, 17.1.1, 17.1.1s, 17.1.1t, 17.1.3, 17.2.1, 17.2.1r, 17.2.1v, 17.2.2, 17.2.3, 17.3.1, 17.3.1a, 17.3.2, 17.3.3, 17.3.4, 17.3.4a, 17.3.5, 17.3.6, 17.3.7, 17.3.8, 17.3.8a, 17.4.1, 17.4.1a, 17.4.1b, 17.4.2, 17.5.1, 17.5.1a, 17.6.1, 17.6.1a, 17.6.2, 17.6.3, 17.6.3a, 17.6.4, 17.6.5, 17.6.5a, 17.6.6, 17.6.6a, 17.7.1, 17.7.1a, 17.7.2, 17.8.1, 17.8.1a, 17.9.1, 17.9.1a, 17.9.2, 17.9.2a, 17.9.3, 17.9.3a, 17.9.4, 17.9.4a, 17.10.1, 17.10.1a, 17.10.1b, 17.11.1, 17.11.1a, 17.12.1, 17.12.1a

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.

Weaknesses

CWE-476
NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

CWE ID: 476

Date

Published: Sept. 25, 2024, 5:15 p.m.

Last Modified: Oct. 8, 2024, 9 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

ykramarz@cisco.com

CPEs

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o cisco ios_xe 3.9.0as / / / / / / /
o cisco ios_xe 3.9.1s / / / / / / /
o cisco ios_xe 3.9.2s / / / / / / /
o cisco ios_xe 3.10.0s / / / / / / /
o cisco ios_xe 3.10.1s / / / / / / /
o cisco ios_xe 3.10.2s / / / / / / /
o cisco ios_xe 3.10.2ts / / / / / / /
o cisco ios_xe 3.10.3s / / / / / / /
o cisco ios_xe 3.10.4s / / / / / / /
o cisco ios_xe 3.10.5s / / / / / / /
o cisco ios_xe 3.10.6s / / / / / / /
o cisco ios_xe 3.10.7s / / / / / / /
o cisco ios_xe 3.10.8as / / / / / / /
o cisco ios_xe 3.10.8s / / / / / / /
o cisco ios_xe 3.10.9s / / / / / / /
o cisco ios_xe 3.10.10s / / / / / / /
o cisco ios_xe 3.11.0s / / / / / / /
o cisco ios_xe 3.11.1s / / / / / / /
o cisco ios_xe 3.11.2s / / / / / / /
o cisco ios_xe 3.11.3s / / / / / / /
o cisco ios_xe 3.11.4s / / / / / / /
o cisco ios_xe 3.12.0s / / / / / / /
o cisco ios_xe 3.12.1s / / / / / / /
o cisco ios_xe 3.12.2s / / / / / / /
o cisco ios_xe 3.12.3s / / / / / / /
o cisco ios_xe 3.12.4s / / / / / / /
o cisco ios_xe 3.13.0s / / / / / / /
o cisco ios_xe 3.13.1s / / / / / / /
o cisco ios_xe 3.13.2s / / / / / / /
o cisco ios_xe 3.13.3s / / / / / / /
o cisco ios_xe 3.13.4s / / / / / / /
o cisco ios_xe 3.13.5s / / / / / / /
o cisco ios_xe 3.13.6as / / / / / / /
o cisco ios_xe 3.13.6s / / / / / / /
o cisco ios_xe 3.13.7s / / / / / / /
o cisco ios_xe 3.13.8s / / / / / / /
o cisco ios_xe 3.13.9s / / / / / / /
o cisco ios_xe 3.13.10s / / / / / / /
o cisco ios_xe 3.14.0s / / / / / / /
o cisco ios_xe 3.14.1s / / / / / / /
o cisco ios_xe 3.14.2s / / / / / / /
o cisco ios_xe 3.14.3s / / / / / / /
o cisco ios_xe 3.14.4s / / / / / / /
o cisco ios_xe 3.15.0s / / / / / / /
o cisco ios_xe 3.15.1cs / / / / / / /
o cisco ios_xe 3.15.1s / / / / / / /
o cisco ios_xe 3.15.2s / / / / / / /
o cisco ios_xe 3.15.3s / / / / / / /
o cisco ios_xe 3.15.4s / / / / / / /
o cisco ios_xe 3.16.0cs / / / / / / /
o cisco ios_xe 3.16.0s / / / / / / /
o cisco ios_xe 3.16.1as / / / / / / /
o cisco ios_xe 3.16.2s / / / / / / /
o cisco ios_xe 3.16.3s / / / / / / /
o cisco ios_xe 3.16.4as / / / / / / /
o cisco ios_xe 3.16.4bs / / / / / / /
o cisco ios_xe 3.16.4ds / / / / / / /
o cisco ios_xe 3.16.5s / / / / / / /
o cisco ios_xe 3.16.6bs / / / / / / /
o cisco ios_xe 3.16.6s / / / / / / /
o cisco ios_xe 3.16.7as / / / / / / /
o cisco ios_xe 3.16.7bs / / / / / / /
o cisco ios_xe 3.16.7s / / / / / / /
o cisco ios_xe 3.16.8s / / / / / / /
o cisco ios_xe 3.16.9s / / / / / / /
o cisco ios_xe 3.16.10s / / / / / / /
o cisco ios_xe 3.17.0s / / / / / / /
o cisco ios_xe 3.17.1s / / / / / / /
o cisco ios_xe 3.17.2s / / / / / / /
o cisco ios_xe 3.17.3s / / / / / / /
o cisco ios_xe 3.17.4s / / / / / / /
o cisco ios_xe 3.18.2asp / / / / / / /
o cisco ios_xe 16.2.1 / / / / / / /
o cisco ios_xe 16.2.2 / / / / / / /
o cisco ios_xe 16.3.1 / / / / / / /
o cisco ios_xe 16.3.1a / / / / / / /
o cisco ios_xe 16.3.2 / / / / / / /
o cisco ios_xe 16.3.3 / / / / / / /
o cisco ios_xe 16.3.4 / / / / / / /
o cisco ios_xe 16.3.5 / / / / / / /
o cisco ios_xe 16.3.6 / / / / / / /
o cisco ios_xe 16.3.7 / / / / / / /
o cisco ios_xe 16.3.8 / / / / / / /
o cisco ios_xe 16.3.9 / / / / / / /
o cisco ios_xe 16.3.10 / / / / / / /
o cisco ios_xe 16.3.11 / / / / / / /
o cisco ios_xe 16.4.1 / / / / / / /
o cisco ios_xe 16.4.2 / / / / / / /
o cisco ios_xe 16.4.3 / / / / / / /
o cisco ios_xe 16.5.1 / / / / / / /
o cisco ios_xe 16.5.1b / / / / / / /
o cisco ios_xe 16.5.2 / / / / / / /
o cisco ios_xe 16.5.3 / / / / / / /
o cisco ios_xe 16.6.1 / / / / / / /
o cisco ios_xe 16.6.2 / / / / / / /
o cisco ios_xe 16.6.3 / / / / / / /
o cisco ios_xe 16.6.4 / / / / / / /
o cisco ios_xe 16.6.5 / / / / / / /
o cisco ios_xe 16.6.6 / / / / / / /
o cisco ios_xe 16.6.7 / / / / / / /
o cisco ios_xe 16.6.8 / / / / / / /
o cisco ios_xe 16.6.9 / / / / / / /
o cisco ios_xe 16.6.10 / / / / / / /
o cisco ios_xe 16.7.1 / / / / / / /
o cisco ios_xe 16.7.2 / / / / / / /
o cisco ios_xe 16.7.3 / / / / / / /
o cisco ios_xe 16.8.1 / / / / / / /
o cisco ios_xe 16.8.1s / / / / / / /
o cisco ios_xe 16.8.2 / / / / / / /
o cisco ios_xe 16.8.3 / / / / / / /
o cisco ios_xe 16.9.1 / / / / / / /
o cisco ios_xe 16.9.1s / / / / / / /
o cisco ios_xe 16.9.2 / / / / / / /
o cisco ios_xe 16.9.3 / / / / / / /
o cisco ios_xe 16.9.4 / / / / / / /
o cisco ios_xe 16.9.5 / / / / / / /
o cisco ios_xe 16.9.6 / / / / / / /
o cisco ios_xe 16.9.7 / / / / / / /
o cisco ios_xe 16.9.8 / / / / / / /
o cisco ios_xe 16.10.1 / / / / / / /
o cisco ios_xe 16.10.1a / / / / / / /
o cisco ios_xe 16.10.1b / / / / / / /
o cisco ios_xe 16.10.1e / / / / / / /
o cisco ios_xe 16.10.1s / / / / / / /
o cisco ios_xe 16.10.2 / / / / / / /
o cisco ios_xe 16.10.3 / / / / / / /
o cisco ios_xe 16.11.1 / / / / / / /
o cisco ios_xe 16.11.1a / / / / / / /
o cisco ios_xe 16.11.1b / / / / / / /
o cisco ios_xe 16.11.1s / / / / / / /
o cisco ios_xe 16.11.2 / / / / / / /
o cisco ios_xe 16.12.1 / / / / / / /
o cisco ios_xe 16.12.1a / / / / / / /
o cisco ios_xe 16.12.1c / / / / / / /
o cisco ios_xe 16.12.1s / / / / / / /
o cisco ios_xe 16.12.2 / / / / / / /
o cisco ios_xe 16.12.2s / / / / / / /
o cisco ios_xe 16.12.3 / / / / / / /
o cisco ios_xe 16.12.3s / / / / / / /
o cisco ios_xe 16.12.4 / / / / / / /
o cisco ios_xe 16.12.4a / / / / / / /
o cisco ios_xe 16.12.5 / / / / / / /
o cisco ios_xe 16.12.6 / / / / / / /
o cisco ios_xe 16.12.7 / / / / / / /
o cisco ios_xe 16.12.8 / / / / / / /
o cisco ios_xe 17.1.1 / / / / / / /
o cisco ios_xe 17.1.1s / / / / / / /
o cisco ios_xe 17.1.1t / / / / / / /
o cisco ios_xe 17.1.3 / / / / / / /
o cisco ios_xe 17.2.1 / / / / / / /
o cisco ios_xe 17.2.1r / / / / / / /
o cisco ios_xe 17.2.1v / / / / / / /
o cisco ios_xe 17.2.2 / / / / / / /
o cisco ios_xe 17.2.3 / / / / / / /
o cisco ios_xe 17.3.1 / / / / / / /
o cisco ios_xe 17.3.1a / / / / / / /
o cisco ios_xe 17.3.2 / / / / / / /
o cisco ios_xe 17.3.3 / / / / / / /
o cisco ios_xe 17.3.4 / / / / / / /
o cisco ios_xe 17.3.4a / / / / / / /
o cisco ios_xe 17.3.5 / / / / / / /
o cisco ios_xe 17.3.6 / / / / / / /
o cisco ios_xe 17.3.7 / / / / / / /
o cisco ios_xe 17.3.8 / / / / / / /
o cisco ios_xe 17.3.8a / / / / / / /
o cisco ios_xe 17.4.1 / / / / / / /
o cisco ios_xe 17.4.1a / / / / / / /
o cisco ios_xe 17.4.1b / / / / / / /
o cisco ios_xe 17.4.2 / / / / / / /
o cisco ios_xe 17.5.1 / / / / / / /
o cisco ios_xe 17.5.1a / / / / / / /
o cisco ios_xe 17.6.1 / / / / / / /
o cisco ios_xe 17.6.1a / / / / / / /
o cisco ios_xe 17.6.2 / / / / / / /
o cisco ios_xe 17.6.3 / / / / / / /
o cisco ios_xe 17.6.3a / / / / / / /
o cisco ios_xe 17.6.4 / / / / / / /
o cisco ios_xe 17.6.5 / / / / / / /
o cisco ios_xe 17.6.5a / / / / / / /
o cisco ios_xe 17.6.6 / / / / / / /
o cisco ios_xe 17.6.6a / / / / / / /
o cisco ios_xe 17.7.1 / / / / / / /
o cisco ios_xe 17.7.1a / / / / / / /
o cisco ios_xe 17.7.2 / / / / / / /
o cisco ios_xe 17.8.1 / / / / / / /
o cisco ios_xe 17.8.1a / / / / / / /
o cisco ios_xe 17.9.1 / / / / / / /
o cisco ios_xe 17.9.1a / / / / / / /
o cisco ios_xe 17.9.2 / / / / / / /
o cisco ios_xe 17.9.2a / / / / / / /
o cisco ios_xe 17.9.3 / / / / / / /
o cisco ios_xe 17.9.3a / / / / / / /
o cisco ios_xe 17.9.4 / / / / / / /
o cisco ios_xe 17.9.4a / / / / / / /
o cisco ios_xe 17.10.1 / / / / / / /
o cisco ios_xe 17.10.1a / / / / / / /
o cisco ios_xe 17.10.1b / / / / / / /
o cisco ios_xe 17.11.1 / / / / / / /
o cisco ios_xe 17.11.1a / / / / / / /
o cisco ios_xe 17.12.1 / / / / / / /
o cisco ios_xe 17.12.1a / / / / / / /

CVSS Data

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Base Score
7.5
Exploitability Score
3.9
Impact Score
3.6
Base Severity
HIGH
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References