CVE-2019-1768: Cisco NX-OS Software Buffer Overflow and Command Injection Vulnerability
First published: Thu May 16 2019(Updated: )
A vulnerability in the implementation of a specific CLI command for Cisco NX-OS Software could allow an authenticated, local attacker with administrator credentials to cause a buffer overflow condition or perform command injection. This could allow the attacker to execute arbitrary commands with elevated privileges on the underlying operating system of an affected device. The vulnerability is due to insufficient validation of arguments passed to a certain CLI command. An attacker could exploit this vulnerability by including malicious input as the argument of the affected CLI command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root privileges. An attacker would need valid administrator credentials to exploit these vulnerabilities.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS | <8.3\(1\) | |
| Cisco Nexus 3016Q Firmware | ||
| Cisco Nexus 3048 Firmware | ||
| Cisco Nexus 3064 Firmware | ||
| Cisco Nexus 3064 | ||
| Cisco Nexus 31108PC-V Firmware | ||
| Cisco Nexus 31108TC-V Firmware | ||
| Cisco Nexus 31128PQ | ||
| Cisco Nexus 3132C-Z Firmware | ||
| Cisco Nexus 3132Q-XL | ||
| Cisco Nexus 3132Q-V Firmware | ||
| Cisco Nexus 3132Q-XL Firmware | ||
| Cisco Nexus 3164Q Firmware | ||
| Cisco Nexus 3172 Firmware | ||
| Cisco Nexus 3172PQ-XL Firmware | ||
| Cisco Nexus 3172TQ Firmware | ||
| Cisco Nexus 3172TQ-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-xl | ||
| Cisco Nexus 3524-xl | ||
| Cisco Nexus 3524-XL Firmware | ||
| Cisco Nexus 3548-X/XL Firmware | ||
| Cisco Nexus 3548-X/XL | ||
| Cisco Nexus 3548-X/XL | ||
| Cisco Nexus 36180YC-R Firmware | ||
| Cisco Nexus 3636C-R Firmware | ||
| Cisco NX-OS Nexus 9000 Series | ||
| Cisco Nexus 92160YC Switch | ||
| Cisco Nexus 92300YC Firmware | ||
| Cisco Nexus 92304QC Switch | ||
| Cisco Nexus 92348GC-X Switch | ||
| Cisco Nexus 9236C Switch | ||
| Cisco Nexus 9272Q Switch | ||
| Cisco Nexus | ||
| Cisco Nexus 93108TC-FX Switch | ||
| Cisco Nexus 93120TX Firmware | ||
| Cisco Nexus 93128 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 9332PQ Firmware | ||
| Cisco Nexus 93360YC-FX2 | ||
| Cisco Nexus 9336C-FX2 Firmware | ||
| Cisco Nexus N9336PQ-X | ||
| Cisco Nexus 9348GC-FXP Firmware | ||
| Cisco Nexus 9364c-h1 | ||
| Cisco Nexus 9372PX-E | ||
| Cisco Nexus 9372PX-E Firmware | ||
| Cisco Nexus 9372TX | ||
| Cisco Nexus 9372TX-E Switch | ||
| Cisco Nexus 9396PX Firmware | ||
| Cisco Nexus 9396TX Firmware | ||
| Cisco Nexus 9504 firmware | ||
| Cisco Nexus 9508 | ||
| Cisco Nexus 9516 firmware |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1768?
CVE-2019-1768 is a vulnerability in the implementation of a specific CLI command for Cisco NX-OS Software.
How can an attacker exploit CVE-2019-1768?
An authenticated, local attacker with administrator credentials can exploit CVE-2019-1768 to cause a buffer overflow condition or perform command injection.
What is the severity of CVE-2019-1768?
CVE-2019-1768 has a severity rating of 6.7 (high).
Which software versions are affected by CVE-2019-1768?
Cisco NX-OS Software versions up to and excluding 8.3(1) are affected by CVE-2019-1768.
Where can I find more information about CVE-2019-1768?
More information about CVE-2019-1768 can be found at the following references: [SecurityFocus](http://www.securityfocus.com/bid/108386) and [Cisco Security Advisory](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-overflow-inj).
- agent/references
- agent/type
- agent/title
- agent/weakness
- agent/author
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- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/first-publish-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco nx-os
- canonical/cisco nexus 3016q firmware
- canonical/cisco nexus 3048 firmware
- canonical/cisco nexus 3064 firmware
- canonical/cisco nexus 3064
- canonical/cisco nexus 31108pc-v firmware
- canonical/cisco nexus 31108tc-v firmware
- canonical/cisco nexus 31128pq
- canonical/cisco nexus 3132c-z firmware
- canonical/cisco nexus 3132q-xl
- canonical/cisco nexus 3132q-v firmware
- canonical/cisco nexus 3132q-xl firmware
- canonical/cisco nexus 3164q firmware
- canonical/cisco nexus 3172 firmware
- canonical/cisco nexus 3172pq-xl firmware
- canonical/cisco nexus 3172tq firmware
- canonical/cisco nexus 3172tq-xl
- canonical/cisco nexus 3172tq-xl firmware
- canonical/cisco nexus 3232c
- canonical/cisco nexus 3264c-e firmware
- canonical/cisco nexus 3264q firmware
- canonical/cisco nexus 3408-s firmware
- canonical/cisco nexus 34180yc firmware
- canonical/cisco nexus 3432d-s firmware
- canonical/cisco nexus 3464c firmware
- canonical/cisco nexus 3524-xl
- canonical/cisco nexus 3524-xl firmware
- canonical/cisco nexus 3548-x/xl firmware
- canonical/cisco nexus 3548-x/xl
- canonical/cisco nexus 36180yc-r firmware
- canonical/cisco nexus 3636c-r firmware
- canonical/cisco nx-os nexus 9000 series
- canonical/cisco nexus 92160yc switch
- canonical/cisco nexus 92300yc firmware
- canonical/cisco nexus 92304qc switch
- canonical/cisco nexus 92348gc-x switch
- canonical/cisco nexus 9236c switch
- canonical/cisco nexus 9272q switch
- canonical/cisco nexus
- canonical/cisco nexus 93108tc-fx switch
- canonical/cisco nexus 93120tx firmware
- canonical/cisco nexus 93128 firmware
- canonical/cisco nexus 93180lc-ex switch
- canonical/cisco nexus 93180yc-ex-24
- canonical/cisco nexus 93180yc-fx firmware
- canonical/cisco nexus 93216tc-fx2 firmware
- canonical/cisco nexus 93240yc-fx2 firmware
- canonical/cisco nexus 9332c firmware
- canonical/cisco nexus 9332pq firmware
- canonical/cisco nexus 93360yc-fx2
- canonical/cisco nexus 9336c-fx2 firmware
- canonical/cisco nexus n9336pq-x
- canonical/cisco nexus 9348gc-fxp firmware
- canonical/cisco nexus 9364c-h1
- canonical/cisco nexus 9372px-e
- canonical/cisco nexus 9372px-e firmware
- canonical/cisco nexus 9372tx
- canonical/cisco nexus 9372tx-e switch
- canonical/cisco nexus 9396px firmware
- canonical/cisco nexus 9396tx firmware
- canonical/cisco nexus 9504 firmware
- canonical/cisco nexus 9508
- canonical/cisco nexus 9516 firmware