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CVE-2021-1442

HIGHCVSS 7.8/10EPSS 0.24%

Last modified

CVE-2021-1442 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.24%

15.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe3.6.3e
CiscoIos Xe3.6.4e
CiscoIos Xe3.6.5ae
CiscoIos Xe3.6.5be
CiscoIos Xe3.6.5e
CiscoIos Xe3.6.6e
CiscoIos Xe3.6.7ae
CiscoIos Xe3.6.7be
CiscoIos Xe3.6.7e
CiscoIos Xe3.6.8e
CiscoIos Xe3.6.9ae
CiscoIos Xe3.6.9e
CiscoIos Xe3.6.10e
CiscoIos Xe3.7.3e
CiscoIos Xe3.7.4e
CiscoIos Xe3.7.5e
CiscoIos Xe3.8.0e
CiscoIos Xe3.8.1e
CiscoIos Xe3.8.2e
CiscoIos Xe3.8.3e
CiscoIos Xe3.8.4e
CiscoIos Xe3.8.5ae
CiscoIos Xe3.8.5e
CiscoIos Xe3.8.6e
CiscoIos Xe3.8.7e
CiscoIos Xe3.8.8e
CiscoIos Xe3.8.9e
CiscoIos Xe3.8.10e
CiscoIos Xe3.9.0e
CiscoIos Xe3.9.1e
CiscoIos Xe3.9.2be
CiscoIos Xe3.9.2e
CiscoIos Xe3.10.0ce
CiscoIos Xe3.10.0e
CiscoIos Xe3.10.1ae
CiscoIos Xe3.10.1e
CiscoIos Xe3.10.1se
CiscoIos Xe3.10.2e
CiscoIos Xe3.10.3e
CiscoIos Xe3.11.0e
CiscoIos Xe3.11.1ae
CiscoIos Xe3.11.1e
CiscoIos Xe3.11.2ae
CiscoIos Xe3.11.2e
CiscoIos Xe3.13.8s
CiscoIos Xe3.13.9s
CiscoIos Xe3.13.10s
CiscoIos Xe3.16.0as
CiscoIos Xe3.16.0bs
CiscoIos Xe3.16.0cs

Showing 50 of 224 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1442?
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.
How severe is CVE-2021-1442?
CVE-2021-1442 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1442?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-1442?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST