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CVE-2019-1810

MEDIUMCVSS 6.7/10EPSS 0.26%

Last modified

CVE-2019-1810 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability exists because software digital signatures are not properly verified during CLI command execution. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability exists because software digital signatures are not properly verified during CLI command execution. An attacker could exploit this vulnerability to install an unsigned software image on an affected device. Note: If the device has not been patched for the vulnerability previously disclosed in the Cisco Security Advisory cisco-sa-20190306-nxos-sig-verif, a successful exploit could allow the attacker to boot a malicious software image.

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
0.26%

17.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoNx-Os>= 6.1\(2\)i3\(4\), < 7.0\(3\)i7\(5\)
CiscoNx-Os>= 7.0\(3\)i7\(5a\), < 9.2\(2\)
CiscoNx-Os>= 7.0\(3\)i3\(1\), < 7.0\(3\)i7\(1\)
CiscoNx-Os>= 7.0\(3\)i7\(2\), < 9.2\(1\)
CiscoNx-Os>= 7.0\(3\)i4\(1\), < 7.0\(3\)i7\(5\)
CiscoNx-Os>= 7.0\(3\)i4\(2\), < 7.0\(3\)i7\(5\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1810?
A vulnerability in the Image Signature Verification feature used in an NX-OS CLI command in Cisco Nexus 3000 Series and 9000 Series Switches could allow an authenticated, local attacker with administrator-level credentials to install a malicious software image on an affected device. The vulnerability exists because software digital signatures are not properly verified during CLI command execution. An attacker could exploit this vulnerability to install an unsigned software image on an affected device. Note: If the device has not been patched for the vulnerability previously disclosed in the Cisco Security Advisory cisco-sa-20190306-nxos-sig-verif, a successful exploit could allow the attacker to boot a malicious software image.
How severe is CVE-2019-1810?
CVE-2019-1810 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1810?
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-2019-1810?

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

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Source: NVD / NIST