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CVE-2020-3207

MEDIUMCVSS 6.7/10EPSS 0.61%

Last modified

CVE-2020-3207 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. An attacker could exploit this vulnerability by modifying device boot options to execute attacker-provided code. A successful exploit may allow an attacker to bypass the Secure Boot process and execute malicious code on an affected device with root-level privileges.

Metrics

CVSS 3.1
6.7/10

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

EPSS Probability
0.61%

44.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe16.9.2
CiscoIos Xe16.9.2a
CiscoIos Xe16.9.2s
CiscoIos Xe16.9.3
CiscoIos Xe16.9.3a
CiscoIos Xe16.9.3h
CiscoIos Xe16.9.3s
CiscoIos Xe16.9.4
CiscoIos Xe16.10.1
CiscoIos Xe16.10.1e
CiscoIos Xe16.10.1s
CiscoIos Xe16.11.1
CiscoIos Xe16.11.1a
CiscoIos Xe16.11.1b
CiscoIos Xe16.11.1c
CiscoIos Xe16.11.1s
CiscoIos Xe16.12.1
CiscoIos Xe16.12.1c
CiscoIos Xe16.12.1s

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3207?
A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. An attacker could exploit this vulnerability by modifying device boot options to execute attacker-provided code. A successful exploit may allow an attacker to bypass the Secure Boot process and execute malicious code on an affected device with root-level privileges.
How severe is CVE-2020-3207?
CVE-2020-3207 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3207?
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-2020-3207?

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

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Source: NVD / NIST