CVE-2021-34708

CVSS V2 High 7.2 CVSS V3 Medium 6.7
Description
Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. For more information about these vulnerabilities, see the Details section of this advisory.
Overview
  • CVE ID
  • CVE-2021-34708
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-09T05:15:07
  • Last Modified Date
  • 2021-09-21T19:47:09
Weakness Enumerations
CWE URL
CWE-347 http://cwe.mitre.org/data/definitions/347.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.3.2
cpe:2.3:h:cisco:8101-32fh:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8101-32h:*:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8102-64h:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8201-32fh:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8800_12-slot:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8800_18-slot:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8800_4-slot:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:8800_8-slot:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.3.2
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* 1 OR 7.4.0 7.4.1
cpe:2.3:h:cisco:n540-12z20g-sys-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-12z20g-sys-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-24z8q2c-m:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-24z8q2c-sys:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-28z4c-sys-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-28z4c-sys-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540-acc-sys:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540x-12z16g-sys-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540x-12z16g-sys-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540x-16z4g8q2c-a:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540x-16z4g8q2c-d:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:n540x-acc-sys:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.7
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-lnt-QN9mCzwn Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-34708
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34708
History
Created Old Value New Value Data Type Notes
2022-05-10 06:54:10 Added to TrackCVE
2022-12-05 10:09:35 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-05 10:09:35 2021-09-09T05:15Z 2021-09-09T05:15:07 CVE Published Date updated
2022-12-05 10:09:35 2021-09-21T19:47:09 CVE Modified Date updated
2022-12-05 10:09:35 Analyzed Vulnerability Status updated