Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2019-1732

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/05/2019
Last modified:
03/11/2021

Description

A vulnerability in the Remote Package Manager (RPM) subsystem of Cisco NX-OS Software could allow an authenticated, local attacker with administrator credentials to leverage a time-of-check, time-of-use (TOCTOU) race condition to corrupt local variables, which could lead to arbitrary command injection. The vulnerability is due to the lack of a proper locking mechanism on critical variables that need to stay static until used. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a set of RPM-related CLI commands. A successful exploit could allow the attacker to perform arbitrary command injection. The attacker would need administrator credentials for the targeted device.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
6.40
Severity 3.x
MEDIUM
Vector 2.0
AV:L/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.90 MEDIUM
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
6.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\)i4 (including) 7.0\(3\)i7\(4\) (excluding)
cpe:2.3:h:cisco:nexus_3000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100-z:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3100v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3200:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3400:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3524-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3524-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3548-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9200:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_9300:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools