CVE-2019-1809
Last modified
CVE-2019-1809 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | >= 7.3, < 8.1\(1a\) |
| Cisco | Nx-Os | >= 8.2, < 8.3\(1\) |
| Cisco | Nx-Os | >= 7.2, < 7.3\(3\)d1\(1\) |
| Cisco | Nx-Os | >= 8.0, < 8.2\(3\) |
| Cisco | Nx-Os | >= 3.1, < 3.2\(3k\) |
References
- http://www.securityfocus.com/bid/108375Broken Link, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/108375Broken Link, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
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