Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-12658

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/09/2019
Last modified:
08/10/2020

Description

A vulnerability in the filesystem resource management code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to exhaust filesystem resources on an affected device and cause a denial of service (DoS) condition. The vulnerability is due to ineffective management of the underlying filesystem resources. An attacker could exploit this vulnerability by performing specific actions that result in messages being sent to specific operating system log files. A successful exploit could allow the attacker to exhaust available filesystem space on an affected device. This could cause the device to crash and reload, resulting in a DoS condition for clients whose network traffic is transiting the device. Upon reload of the device, the impacted filesystem space is cleared, and the device will return to normal operation. However, continued exploitation of this vulnerability could cause subsequent forced crashes and reloads, which could lead to an extended DoS condition.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*
cpe:2.3:h:cisco:1100_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4221_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4321_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4331_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x_r:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_900:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools