CVE-2018-15369

A vulnerability in the TACACS+ client subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of crafted TACACS+ response packets by the affected software. An attacker could exploit this vulnerability by injecting a crafted TACACS+ packet into an existing TACACS+ session between an affected device and a TACACS+ server or by impersonating a known, valid TACACS+ server and sending a crafted TACACS+ packet to an affected device when establishing a connection to the device. To exploit this vulnerability by using either method, the attacker must know the shared TACACS+ secret and the crafted packet must be sent in response to a TACACS+ request from a TACACS+ client. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

CVSS v3 6.8 MEDIUM
CVSS v2.0 7.8 HIGH

6.8^/10

CVSS v3 : MEDIUM

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

Exploitability : 2.2 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

7.8^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://www.securityfocus.com/bid/105426	Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-tacplus	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:cisco:ios:15.6\(1.9\)t:::::::*
	cpe:2.3:o:cisco:ios_xe:-:::::::*

History

No history.

Information

Published : 2018-10-05 14:29

Updated : 2023-12-10 12:44

NVD link : CVE-2018-15369

Mitre link : CVE-2018-15369

CVE.ORG link : CVE-2018-15369

JSON object : View

Products Affected

cisco

ios
ios_xe

CWE

CWE-20

Improper Input Validation

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