CVE-2020-3513

Multiple vulnerabilities in the initialization routines that are executed during bootup of Cisco IOS XE Software for Cisco ASR 900 Series Aggregation Services Routers with a Route Switch Processor 3 (RSP3) installed could allow an authenticated, local attacker with high privileges to execute persistent code at bootup and break the chain of trust. These vulnerabilities are due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. An attacker could exploit these vulnerabilities by copying a specific file to the local file system of an affected device and defining specific ROMMON variables. A successful exploit could allow the attacker to run arbitrary code on the underlying operating system (OS) with root privileges. To exploit these vulnerabilities, an attacker would need to have access to the root shell on the device or have physical access to the device.

CVSS v3.0 6.7 MEDIUM
CVSS v2.0 6.9 MEDIUM

6.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-rsp3-rce-jVHg8Z7c	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:cisco:ios_xe:16.12.1:::::::*
	cpe:2.3:o:cisco:ios_xe:17.2:::::::*

OR	cpe:2.3:h:cisco:asr_902:-:::::::*
	cpe:2.3:h:cisco:asr_903:-:::::::*
	cpe:2.3:h:cisco:asr_907:-:::::::*
	cpe:2.3:h:cisco:ncs_4206:-:::::::*
	cpe:2.3:h:cisco:ncs_4216:-:::::::*
	cpe:2.3:h:cisco:ncs_4216_f2b:-:::::::*

Information

Published : 2020-09-24 11:15

Updated : 2020-10-08 06:42

NVD link : CVE-2020-3513

Mitre link : CVE-2020-3513

JSON object : View

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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Products Affected

cisco

asr_907
ncs_4216
asr_902
asr_903
ncs_4216_f2b
ios_xe
ncs_4206

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