PT-2019-2414 · Cisco · Cisco Nx-Os+1

Published 2019-05-15 · Updated 2021-11-03 · CVE-2019-1732

Positive Technologies (AI Summary)

CVSS v2.0

6.9

Medium

Base vector

AV:L/AC:M/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 a time-of-check, time-of-use (TOCTOU) race condition in the Remote Package Manager (RPM) subsystem of Cisco NX-OS Software. This condition could allow an authenticated, local attacker with administrator credentials to corrupt local variables, leading to arbitrary command injection. The vulnerability is due to the lack of a proper locking mechanism on critical variables. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a set of RPM-related CLI commands, potentially allowing them to perform arbitrary command injection.

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

OS Command Injection

Improper Locking

Weakness Enumeration

CWE-78

CWE-667

Related Identifiers

BDU:2019-02192

CVE-2019-1732

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-rpm-injec · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1732 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1732 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02192 · Security Note
• http://securityfocus.com/bid/108361 · Note
• https://securityfocus.com/bid/108361/info · Note