high
7.2
CWE
347
Advisory Published
Updated

CVE-2019-1813: Cisco NX-OS CLI Command Software Image Signature Verification Vulnerability

First published: Wed May 15 2019(Updated: )

A vulnerability in the Image Signature Verification feature of Cisco NX-OS Software 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.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco NX-OS>=7.0\(3\)i1\(x\)<7.0\(3\)i7\(5\)
Cisco NX-OS>=9.2<9.2\(2\)
Cisco Nexus 3048 Firmware
Cisco Nexus 31108PC-V Firmware
Cisco Nexus 31108TC-V Firmware
Cisco Nexus 31128PQ
Cisco Nexus 3132C-Z Firmware
Cisco Nexus 3132Q-V Firmware
Cisco Nexus 3132Q-X/3132Q-XL
Cisco Nexus 3164Q Firmware
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus 3172TQ-XL Firmware
Cisco Nexus 3232C
Cisco Nexus 3264C-E Firmware
Cisco Nexus 3264Q Firmware
Cisco Nexus 3408-S Firmware
Cisco Nexus 34180YC Firmware
Cisco Nexus 3432D-S Firmware
Cisco Nexus 3464C Firmware
Cisco Nexus 3524-x/xl
Cisco Nexus 3548-x/xl
Cisco Nexus 36180YC-R Firmware
Cisco Nexus 3636C-R Firmware
Cisco NX-OS>=7.0\(3\)<7.0\(3\)f3\(5\)
Cisco Nexus 9500 Series
Cisco Nexus N9K-C9508-FM-R
Cisco NX-OS<7.0\(3\)i7\(5\)
Cisco Nexus 9432PQ
Cisco Nexus 9536PQ
Cisco Nexus 9636PQ
Cisco Nexus 9736PQ
Cisco Nexus 9000 Series N9K-X9432C-S
Cisco Nexus 9000 Series N9K-X9464PX
Cisco N9K-X9464TX2 Firmware
Cisco N9K-X9564PX
Cisco N9K-X9564TX
Cisco Nexus 9636C-R
Cisco Nexus n9k-x9636c-rx
Cisco Nexus 9000 N9K-X97160YC-EX
Cisco Nexus 9000 Series Switches n9k-x9732c-ex
Cisco Nexus 9000 Series N9K-X9732C-FX
Cisco Nexus 9000 Series Switch n9k-x9736c-ex
Cisco Nexus 9000 Series Switch
Cisco Nexus 9000 Series Switch n9k-x9788tc-fx
Cisco Nexus 92160YC Switch
Cisco Nexus 92300YC Firmware
Cisco Nexus
Cisco Nexus 93108TC-FX Switch
Cisco Nexus 93120TX Firmware
Cisco Nexus 9316D-GX Firmware
Cisco Nexus 93180LC-EX Switch
Cisco Nexus 93180YC-EX-24
Cisco Nexus 93180YC-FX Firmware
Cisco Nexus 93216TC-FX2 Firmware
Cisco Nexus 93240YC-FX2 Firmware
Cisco Nexus 9332C Firmware
Cisco Nexus 93360YC-FX2
Cisco Nexus 9336C-FX2 Firmware
Cisco Nexus 9348GC-FXP Firmware
Cisco Nexus 93600CD-GX Firmware
Cisco Nexus 9364c-h1
Cisco Nexus 9500 Supervisor A
Cisco Nexus 9500 Supervisor A+
Cisco Nexus 9500 Supervisor B firmware
Cisco Nexus 9500 Supervisor B+
Cisco Nexus 9504 firmware
Cisco Nexus 9508
Cisco Nexus 9516 firmware
Cisco Nexus X9636Q-R

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-1813?

    The severity of CVE-2019-1813 is classified as high, as it allows an authenticated, local attacker to install a malicious software image on affected devices.

  • How do I fix CVE-2019-1813?

    To fix CVE-2019-1813, upgrade to a fixed Cisco NX-OS software version as outlined in the Cisco security advisory.

  • Which versions of Cisco NX-OS are affected by CVE-2019-1813?

    CVE-2019-1813 affects Cisco NX-OS versions between 7.0(3)i1(x) and 7.0(3)i7(5), as well as certain versions up to 9.2(2).

  • What type of attack can be performed using CVE-2019-1813?

    An attacker exploiting CVE-2019-1813 can install unauthorized software images, which may lead to device compromise.

  • Are there any specific mitigation steps for CVE-2019-1813?

    The primary mitigation for CVE-2019-1813 is to ensure that devices are running the updated software versions that address the vulnerability.

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