CVE-2019-1809: Cisco NX-OS Software Patch Signature Verification Bypass Vulnerability
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 patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2019-1809?
CVE-2019-1809 is a vulnerability in the Image Signature Verification feature of Cisco NX-OS Software that could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device.
Which software is affected by CVE-2019-1809?
Cisco NX-OS Software versions 7.3 to 8.1(1a) and versions 8.2 to 8.3(1) are affected by CVE-2019-1809.
What is the severity of CVE-2019-1809?
CVE-2019-1809 has a severity score of 6.7 (medium).
How can I fix CVE-2019-1809?
It is recommended to upgrade to a fixed version of Cisco NX-OS Software.
Where can I find more information about CVE-2019-1809?
You can find more information about CVE-2019-1809 on the Cisco Security Advisory website and the SecurityFocus website.