PT-2019-2214 · Cisco · Cisco Nx-Os+1

Published 2019-05-15 · Updated 2023-03-24 · CVE-2019-1813

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

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

Description The issue is related to incorrect verification of cryptographic signatures in the Image Signature Verification feature of Cisco NX-OS Software. This 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 to install an unsigned software image on an affected device.

Recommendations For Cisco NX-OS Software, consider applying the software updates released by Cisco that address these vulnerabilities. As a temporary workaround, restrict access to the CLI command execution to minimize the risk of exploitation. Avoid installing unsigned software images on affected devices until the issue is resolved. At the moment, there is no information about specific versions that contain a fix for this vulnerability, but applying the latest software updates from Cisco is recommended.

Fix

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

BDU:2019-01985

CVE-2019-1813

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 5

• https://osv.dev/vulnerability/CVE-2019-1813 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-sisv2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1813 · Security Note
• https://bdu.fstec.ru/vul/2019-01985 · Security Note
• http://securityfocus.com/bid/108425 · Note