CVE-2021-1370

A vulnerability in a CLI command of Cisco IOS XR Software for the Cisco 8000 Series Routers and Network Convergence System 540 Series Routers running NCS540L software images could allow an authenticated, local attacker to elevate their privilege to root. To exploit this vulnerability, an attacker would need to have a valid account on an affected device. The vulnerability is due to insufficient validation of command line arguments. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the prompt. A successful exploit could allow an attacker with low-level privileges to escalate their privilege level to root.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pe-QpzCAePe	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:cisco:ios_xr::::::::
	cpe:2.3:o:cisco:ios_xr::::::::

OR	cpe:2.3:h:cisco:8201:-:::::::*
	cpe:2.3:h:cisco:8202:-:::::::*
	cpe:2.3:h:cisco:8808:-:::::::*
	cpe:2.3:h:cisco:8812:-:::::::*
	cpe:2.3:h:cisco:8818:-:::::::*

Configuration 2 (hide)

AND

cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*

Information

Published : 2021-02-04 09:15

Updated : 2021-02-08 12:41

NVD link : CVE-2021-1370

Mitre link : CVE-2021-1370

JSON object : View

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Products Affected

cisco

8812
ios_xr
8818
ncs_540
8808
8202
8201

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