CVE Vulnerabilities

CVE-2021-1442

Insertion of Sensitive Information into Log File

Published: Mar 24, 2021 | Modified: Mar 30, 2021
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in a diagnostic command for the Plug-and-Play (PnP) subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to the level of an Administrator user (level 15) on an affected device. The vulnerability is due to insufficient protection of sensitive information. An attacker with low privileges could exploit this vulnerability by issuing the diagnostic CLI show pnp profile when a specific PnP listener is enabled on the device. A successful exploit could allow the attacker to obtain a privileged authentication token. This token can be used to send crafted PnP messages and execute privileged commands on the targeted system.

Weakness

Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.

Affected Software

Name Vendor Start Version End Version
Ios_xe Cisco 3.6.3e (including) 3.6.3e (including)
Ios_xe Cisco 3.6.4e (including) 3.6.4e (including)
Ios_xe Cisco 3.6.5ae (including) 3.6.5ae (including)
Ios_xe Cisco 3.6.5be (including) 3.6.5be (including)
Ios_xe Cisco 3.6.5e (including) 3.6.5e (including)
Ios_xe Cisco 3.6.6e (including) 3.6.6e (including)
Ios_xe Cisco 3.6.7ae (including) 3.6.7ae (including)
Ios_xe Cisco 3.6.7be (including) 3.6.7be (including)
Ios_xe Cisco 3.6.7e (including) 3.6.7e (including)
Ios_xe Cisco 3.6.8e (including) 3.6.8e (including)
Ios_xe Cisco 3.6.9ae (including) 3.6.9ae (including)
Ios_xe Cisco 3.6.9e (including) 3.6.9e (including)
Ios_xe Cisco 3.6.10e (including) 3.6.10e (including)
Ios_xe Cisco 3.7.3e (including) 3.7.3e (including)
Ios_xe Cisco 3.7.4e (including) 3.7.4e (including)
Ios_xe Cisco 3.7.5e (including) 3.7.5e (including)
Ios_xe Cisco 3.8.0e (including) 3.8.0e (including)
Ios_xe Cisco 3.8.1e (including) 3.8.1e (including)
Ios_xe Cisco 3.8.2e (including) 3.8.2e (including)
Ios_xe Cisco 3.8.3e (including) 3.8.3e (including)
Ios_xe Cisco 3.8.4e (including) 3.8.4e (including)
Ios_xe Cisco 3.8.5ae (including) 3.8.5ae (including)
Ios_xe Cisco 3.8.5e (including) 3.8.5e (including)
Ios_xe Cisco 3.8.6e (including) 3.8.6e (including)
Ios_xe Cisco 3.8.7e (including) 3.8.7e (including)
Ios_xe Cisco 3.8.8e (including) 3.8.8e (including)
Ios_xe Cisco 3.8.9e (including) 3.8.9e (including)
Ios_xe Cisco 3.8.10e (including) 3.8.10e (including)
Ios_xe Cisco 3.9.0e (including) 3.9.0e (including)
Ios_xe Cisco 3.9.1e (including) 3.9.1e (including)
Ios_xe Cisco 3.9.2be (including) 3.9.2be (including)
Ios_xe Cisco 3.9.2e (including) 3.9.2e (including)
Ios_xe Cisco 3.10.0ce (including) 3.10.0ce (including)
Ios_xe Cisco 3.10.0e (including) 3.10.0e (including)
Ios_xe Cisco 3.10.1ae (including) 3.10.1ae (including)
Ios_xe Cisco 3.10.1e (including) 3.10.1e (including)
Ios_xe Cisco 3.10.1se (including) 3.10.1se (including)
Ios_xe Cisco 3.10.2e (including) 3.10.2e (including)
Ios_xe Cisco 3.10.3e (including) 3.10.3e (including)
Ios_xe Cisco 3.11.0e (including) 3.11.0e (including)
Ios_xe Cisco 3.11.1ae (including) 3.11.1ae (including)
Ios_xe Cisco 3.11.1e (including) 3.11.1e (including)
Ios_xe Cisco 3.11.2ae (including) 3.11.2ae (including)
Ios_xe Cisco 3.11.2e (including) 3.11.2e (including)
Ios_xe Cisco 3.13.8s (including) 3.13.8s (including)
Ios_xe Cisco 3.13.9s (including) 3.13.9s (including)
Ios_xe Cisco 3.13.10s (including) 3.13.10s (including)
Ios_xe Cisco 3.16.0as (including) 3.16.0as (including)
Ios_xe Cisco 3.16.0bs (including) 3.16.0bs (including)
Ios_xe Cisco 3.16.0cs (including) 3.16.0cs (including)
Ios_xe Cisco 3.16.0s (including) 3.16.0s (including)
Ios_xe Cisco 3.16.1as (including) 3.16.1as (including)
Ios_xe Cisco 3.16.1s (including) 3.16.1s (including)
Ios_xe Cisco 3.16.2as (including) 3.16.2as (including)
Ios_xe Cisco 3.16.2bs (including) 3.16.2bs (including)
Ios_xe Cisco 3.16.2s (including) 3.16.2s (including)
Ios_xe Cisco 3.16.3as (including) 3.16.3as (including)
Ios_xe Cisco 3.16.3s (including) 3.16.3s (including)
Ios_xe Cisco 3.16.4as (including) 3.16.4as (including)
Ios_xe Cisco 3.16.4bs (including) 3.16.4bs (including)
Ios_xe Cisco 3.16.4cs (including) 3.16.4cs (including)
Ios_xe Cisco 3.16.4ds (including) 3.16.4ds (including)
Ios_xe Cisco 3.16.4es (including) 3.16.4es (including)
Ios_xe Cisco 3.16.4gs (including) 3.16.4gs (including)
Ios_xe Cisco 3.16.4s (including) 3.16.4s (including)
Ios_xe Cisco 3.16.5as (including) 3.16.5as (including)
Ios_xe Cisco 3.16.5bs (including) 3.16.5bs (including)
Ios_xe Cisco 3.16.5s (including) 3.16.5s (including)
Ios_xe Cisco 3.16.6bs (including) 3.16.6bs (including)
Ios_xe Cisco 3.16.6s (including) 3.16.6s (including)
Ios_xe Cisco 3.16.7as (including) 3.16.7as (including)
Ios_xe Cisco 3.16.7bs (including) 3.16.7bs (including)
Ios_xe Cisco 3.16.7s (including) 3.16.7s (including)
Ios_xe Cisco 3.16.8s (including) 3.16.8s (including)
Ios_xe Cisco 3.16.9s (including) 3.16.9s (including)
Ios_xe Cisco 3.16.10as (including) 3.16.10as (including)
Ios_xe Cisco 3.16.10s (including) 3.16.10s (including)
Ios_xe Cisco 3.17.0s (including) 3.17.0s (including)
Ios_xe Cisco 3.17.1as (including) 3.17.1as (including)
Ios_xe Cisco 3.17.1s (including) 3.17.1s (including)
Ios_xe Cisco 3.17.2s (including) 3.17.2s (including)
Ios_xe Cisco 3.17.3s (including) 3.17.3s (including)
Ios_xe Cisco 3.17.4s (including) 3.17.4s (including)
Ios_xe Cisco 3.18.0as (including) 3.18.0as (including)
Ios_xe Cisco 3.18.0s (including) 3.18.0s (including)
Ios_xe Cisco 3.18.0sp (including) 3.18.0sp (including)
Ios_xe Cisco 3.18.1asp (including) 3.18.1asp (including)
Ios_xe Cisco 3.18.1bsp (including) 3.18.1bsp (including)
Ios_xe Cisco 3.18.1csp (including) 3.18.1csp (including)
Ios_xe Cisco 3.18.1gsp (including) 3.18.1gsp (including)
Ios_xe Cisco 3.18.1hsp (including) 3.18.1hsp (including)
Ios_xe Cisco 3.18.1isp (including) 3.18.1isp (including)
Ios_xe Cisco 3.18.1s (including) 3.18.1s (including)
Ios_xe Cisco 3.18.1sp (including) 3.18.1sp (including)
Ios_xe Cisco 3.18.2asp (including) 3.18.2asp (including)
Ios_xe Cisco 3.18.2s (including) 3.18.2s (including)
Ios_xe Cisco 3.18.2sp (including) 3.18.2sp (including)
Ios_xe Cisco 3.18.3asp (including) 3.18.3asp (including)
Ios_xe Cisco 3.18.3bsp (including) 3.18.3bsp (including)
Ios_xe Cisco 3.18.3s (including) 3.18.3s (including)
Ios_xe Cisco 3.18.3sp (including) 3.18.3sp (including)
Ios_xe Cisco 3.18.4s (including) 3.18.4s (including)
Ios_xe Cisco 3.18.4sp (including) 3.18.4sp (including)
Ios_xe Cisco 3.18.5sp (including) 3.18.5sp (including)
Ios_xe Cisco 3.18.6sp (including) 3.18.6sp (including)
Ios_xe Cisco 3.18.7sp (including) 3.18.7sp (including)
Ios_xe Cisco 3.18.8asp (including) 3.18.8asp (including)
Ios_xe Cisco 3.18.8sp (including) 3.18.8sp (including)
Ios_xe Cisco 16.1.1 (including) 16.1.1 (including)
Ios_xe Cisco 16.1.2 (including) 16.1.2 (including)
Ios_xe Cisco 16.1.3 (including) 16.1.3 (including)
Ios_xe Cisco 16.2.1 (including) 16.2.1 (including)
Ios_xe Cisco 16.2.2 (including) 16.2.2 (including)
Ios_xe Cisco 16.3.1 (including) 16.3.1 (including)
Ios_xe Cisco 16.3.1a (including) 16.3.1a (including)
Ios_xe Cisco 16.3.2 (including) 16.3.2 (including)
Ios_xe Cisco 16.3.3 (including) 16.3.3 (including)
Ios_xe Cisco 16.3.4 (including) 16.3.4 (including)
Ios_xe Cisco 16.3.5 (including) 16.3.5 (including)
Ios_xe Cisco 16.3.5b (including) 16.3.5b (including)
Ios_xe Cisco 16.3.6 (including) 16.3.6 (including)
Ios_xe Cisco 16.3.7 (including) 16.3.7 (including)
Ios_xe Cisco 16.3.8 (including) 16.3.8 (including)
Ios_xe Cisco 16.3.9 (including) 16.3.9 (including)
Ios_xe Cisco 16.3.10 (including) 16.3.10 (including)
Ios_xe Cisco 16.3.11 (including) 16.3.11 (including)
Ios_xe Cisco 16.4.1 (including) 16.4.1 (including)
Ios_xe Cisco 16.4.2 (including) 16.4.2 (including)
Ios_xe Cisco 16.4.3 (including) 16.4.3 (including)
Ios_xe Cisco 16.5.1 (including) 16.5.1 (including)
Ios_xe Cisco 16.5.1a (including) 16.5.1a (including)
Ios_xe Cisco 16.5.1b (including) 16.5.1b (including)
Ios_xe Cisco 16.5.2 (including) 16.5.2 (including)
Ios_xe Cisco 16.5.3 (including) 16.5.3 (including)
Ios_xe Cisco 16.6.1 (including) 16.6.1 (including)
Ios_xe Cisco 16.6.2 (including) 16.6.2 (including)
Ios_xe Cisco 16.6.3 (including) 16.6.3 (including)
Ios_xe Cisco 16.6.4 (including) 16.6.4 (including)
Ios_xe Cisco 16.6.4a (including) 16.6.4a (including)
Ios_xe Cisco 16.6.4s (including) 16.6.4s (including)
Ios_xe Cisco 16.6.5 (including) 16.6.5 (including)
Ios_xe Cisco 16.6.5a (including) 16.6.5a (including)
Ios_xe Cisco 16.6.5b (including) 16.6.5b (including)
Ios_xe Cisco 16.6.6 (including) 16.6.6 (including)
Ios_xe Cisco 16.6.7 (including) 16.6.7 (including)
Ios_xe Cisco 16.6.7a (including) 16.6.7a (including)
Ios_xe Cisco 16.6.8 (including) 16.6.8 (including)
Ios_xe Cisco 16.7.1 (including) 16.7.1 (including)
Ios_xe Cisco 16.7.1a (including) 16.7.1a (including)
Ios_xe Cisco 16.7.1b (including) 16.7.1b (including)
Ios_xe Cisco 16.7.2 (including) 16.7.2 (including)
Ios_xe Cisco 16.7.3 (including) 16.7.3 (including)
Ios_xe Cisco 16.7.4 (including) 16.7.4 (including)
Ios_xe Cisco 16.8.1 (including) 16.8.1 (including)
Ios_xe Cisco 16.8.1a (including) 16.8.1a (including)
Ios_xe Cisco 16.8.1b (including) 16.8.1b (including)
Ios_xe Cisco 16.8.1c (including) 16.8.1c (including)
Ios_xe Cisco 16.8.1d (including) 16.8.1d (including)
Ios_xe Cisco 16.8.1e (including) 16.8.1e (including)
Ios_xe Cisco 16.8.1s (including) 16.8.1s (including)
Ios_xe Cisco 16.8.2 (including) 16.8.2 (including)
Ios_xe Cisco 16.8.3 (including) 16.8.3 (including)
Ios_xe Cisco 16.9.1 (including) 16.9.1 (including)
Ios_xe Cisco 16.9.1a (including) 16.9.1a (including)
Ios_xe Cisco 16.9.1b (including) 16.9.1b (including)
Ios_xe Cisco 16.9.1c (including) 16.9.1c (including)
Ios_xe Cisco 16.9.1d (including) 16.9.1d (including)
Ios_xe Cisco 16.9.1s (including) 16.9.1s (including)
Ios_xe Cisco 16.9.2 (including) 16.9.2 (including)
Ios_xe Cisco 16.9.2a (including) 16.9.2a (including)
Ios_xe Cisco 16.9.2s (including) 16.9.2s (including)
Ios_xe Cisco 16.9.3 (including) 16.9.3 (including)
Ios_xe Cisco 16.9.3a (including) 16.9.3a (including)
Ios_xe Cisco 16.9.3h (including) 16.9.3h (including)
Ios_xe Cisco 16.9.3s (including) 16.9.3s (including)
Ios_xe Cisco 16.9.4 (including) 16.9.4 (including)
Ios_xe Cisco 16.9.4c (including) 16.9.4c (including)
Ios_xe Cisco 16.9.5 (including) 16.9.5 (including)
Ios_xe Cisco 16.9.5f (including) 16.9.5f (including)
Ios_xe Cisco 16.9.6 (including) 16.9.6 (including)
Ios_xe Cisco 16.10.1 (including) 16.10.1 (including)
Ios_xe Cisco 16.10.1a (including) 16.10.1a (including)
Ios_xe Cisco 16.10.1b (including) 16.10.1b (including)
Ios_xe Cisco 16.10.1c (including) 16.10.1c (including)
Ios_xe Cisco 16.10.1d (including) 16.10.1d (including)
Ios_xe Cisco 16.10.1e (including) 16.10.1e (including)
Ios_xe Cisco 16.10.1f (including) 16.10.1f (including)
Ios_xe Cisco 16.10.1g (including) 16.10.1g (including)
Ios_xe Cisco 16.10.1s (including) 16.10.1s (including)
Ios_xe Cisco 16.10.2 (including) 16.10.2 (including)
Ios_xe Cisco 16.10.3 (including) 16.10.3 (including)
Ios_xe Cisco 16.11.1 (including) 16.11.1 (including)
Ios_xe Cisco 16.11.1a (including) 16.11.1a (including)
Ios_xe Cisco 16.11.1b (including) 16.11.1b (including)
Ios_xe Cisco 16.11.1c (including) 16.11.1c (including)
Ios_xe Cisco 16.11.1s (including) 16.11.1s (including)
Ios_xe Cisco 16.11.2 (including) 16.11.2 (including)
Ios_xe Cisco 16.12.1 (including) 16.12.1 (including)
Ios_xe Cisco 16.12.1a (including) 16.12.1a (including)
Ios_xe Cisco 16.12.1c (including) 16.12.1c (including)
Ios_xe Cisco 16.12.1s (including) 16.12.1s (including)
Ios_xe Cisco 16.12.1t (including) 16.12.1t (including)
Ios_xe Cisco 16.12.1w (including) 16.12.1w (including)
Ios_xe Cisco 16.12.1x (including) 16.12.1x (including)
Ios_xe Cisco 16.12.1y (including) 16.12.1y (including)
Ios_xe Cisco 16.12.1z (including) 16.12.1z (including)
Ios_xe Cisco 16.12.2 (including) 16.12.2 (including)
Ios_xe Cisco 16.12.2a (including) 16.12.2a (including)
Ios_xe Cisco 16.12.2s (including) 16.12.2s (including)
Ios_xe Cisco 16.12.2t (including) 16.12.2t (including)
Ios_xe Cisco 16.12.3 (including) 16.12.3 (including)
Ios_xe Cisco 16.12.3a (including) 16.12.3a (including)
Ios_xe Cisco 16.12.3s (including) 16.12.3s (including)
Ios_xe Cisco 16.12.4 (including) 16.12.4 (including)
Ios_xe Cisco 16.12.4a (including) 16.12.4a (including)
Ios_xe Cisco 17.1.1 (including) 17.1.1 (including)
Ios_xe Cisco 17.1.1a (including) 17.1.1a (including)
Ios_xe Cisco 17.1.1s (including) 17.1.1s (including)
Ios_xe Cisco 17.1.1t (including) 17.1.1t (including)
Ios_xe Cisco 17.1.2 (including) 17.1.2 (including)
Ios_xe Cisco 17.2.1 (including) 17.2.1 (including)
Ios_xe Cisco 17.2.1a (including) 17.2.1a (including)
Ios_xe Cisco 17.2.1r (including) 17.2.1r (including)
Ios_xe Cisco 17.2.1v (including) 17.2.1v (including)

Extended Description

While logging all information may be helpful during development stages, it is important that logging levels be set appropriately before a product ships so that sensitive user data and system information are not accidentally exposed to potential attackers. Different log files may be produced and stored for:

Potential Mitigations

References