PT-2019-2415 · Cisco · Cisco Nx-Os+1

Published 2019-05-15 · Updated 2023-03-24 · CVE-2019-1809

Positive Technologies (AI Summary)

CVSS v3.1

6.7

Medium

Base vector

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cisco NX-OS Software (affected versions not specified)

Description A vulnerability in the Image Signature Verification feature could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The issue is due to improper verification of digital signatures for patch images. An attacker could exploit this 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

BDU:2019-02193

CVE-2019-1809

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 7

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-psvb · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1809 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1809 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02193 · Security Note
• http://securityfocus.com/bid/108375 · Note
• https://securityfocus.com/bid/108375 · Note
• https://t.me/cvenotify/46780 · Telegram Post