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CVE-2021-1384

HIGHCVSS 7.2/10EPSS 35.39%

Last modified

CVE-2021-1384 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user. This vulnerability is due to incomplete validation of fields in the application packages loaded onto IOx. EPSS estimates a 35.39% chance of exploitation in the next 30 days.

Description

A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user. This vulnerability is due to incomplete validation of fields in the application packages loaded onto IOx. An attacker could exploit this vulnerability by creating a crafted application .tar file and loading it onto the device. A successful exploit could allow the attacker to perform command injection into the underlying operating system as the root user.

Metrics

CVSS 3.1
7.2/10

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

EPSS Probability
35.39%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe< 16.6.9
CiscoIos Xe>= 16.9.0, < 16.9.7
CiscoIos Xe>= 17.3.2, < 17.3.3
CiscoIos Xe>= 17.4.0, < 17.4.2
CiscoIos Xe17.5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-1384?
A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user. This vulnerability is due to incomplete validation of fields in the application packages loaded onto IOx. An attacker could exploit this vulnerability by creating a crafted application .tar file and loading it onto the device. A successful exploit could allow the attacker to perform command injection into the underlying operating system as the root user.
How severe is CVE-2021-1384?
CVE-2021-1384 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 35.39% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1384?
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-2021-1384?

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

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Source: NVD / NIST