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CVE-2020-3209

MEDIUMCVSS 6.8/10EPSS 0.27%

Last modified

CVE-2020-3209 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Metrics

CVSS 3.1
6.8/10

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

EPSS Probability
0.27%

18.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe3.2.0se
CiscoIos Xe3.2.0sg
CiscoIos Xe3.2.1se
CiscoIos Xe3.2.1sg
CiscoIos Xe3.2.2se
CiscoIos Xe3.2.2sg
CiscoIos Xe3.2.3se
CiscoIos Xe3.2.3sg
CiscoIos Xe3.2.4sg
CiscoIos Xe3.2.5sg
CiscoIos Xe3.2.6sg
CiscoIos Xe3.2.7sg
CiscoIos Xe3.2.8sg
CiscoIos Xe3.2.9sg
CiscoIos Xe3.2.10sg
CiscoIos Xe3.2.11sg
CiscoIos Xe3.3.0se
CiscoIos Xe3.3.0sg
CiscoIos Xe3.3.0sq
CiscoIos Xe3.3.0xo
CiscoIos Xe3.3.1se
CiscoIos Xe3.3.1sg
CiscoIos Xe3.3.1sq
CiscoIos Xe3.3.1xo
CiscoIos Xe3.3.2se
CiscoIos Xe3.3.2sg
CiscoIos Xe3.3.2xo
CiscoIos Xe3.3.3se
CiscoIos Xe3.3.4se
CiscoIos Xe3.3.5se
CiscoIos Xe3.4.0sg
CiscoIos Xe3.4.0sq
CiscoIos Xe3.4.1sg
CiscoIos Xe3.4.1sq
CiscoIos Xe3.4.2sg
CiscoIos Xe3.4.3sg
CiscoIos Xe3.4.4sg
CiscoIos Xe3.4.5sg
CiscoIos Xe3.4.6sg
CiscoIos Xe3.4.7sg
CiscoIos Xe3.4.8sg
CiscoIos Xe3.5.0e
CiscoIos Xe3.5.0sq
CiscoIos Xe3.5.1e
CiscoIos Xe3.5.1sq
CiscoIos Xe3.5.2e
CiscoIos Xe3.5.2sq
CiscoIos Xe3.5.3e
CiscoIos Xe3.5.3sq
CiscoIos Xe3.5.4sq

Showing 50 of 314 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3209?
A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.
How severe is CVE-2020-3209?
CVE-2020-3209 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3209?
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-2020-3209?

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

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Source: NVD / NIST