Vulnerability Details : CVE-2021-1432
A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.
Vulnerability category: Input validation
Products affected by CVE-2021-1432
- cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1w:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1x:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1y:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1z:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1za:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.2a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.3a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.3s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:17.2.1r:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.4a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe_sd-wan:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-1432
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-1432
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
7.3
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
1.3
|
5.9
|
Cisco Systems, Inc. | |
|
7.3
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
1.3
|
5.9
|
NIST |
CWE ids for CVE-2021-1432
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: ykramarz@cisco.com (Secondary)
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-1432
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwarbcmdexec-sspOMUr3
Cisco IOS XE SD-WAN Software Arbitrary Command Execution VulnerabilityVendor Advisory
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