CVE-2021-34724

CVSS V2 Medium 6.6 CVSS V3 Medium 6
Description
A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges and execute arbitrary code on the underlying operating system as the root user. An attacker must be authenticated on an affected device as a PRIV15 user. This vulnerability is due to insufficient file system protection and the presence of a sensitive file in the bootflash directory on an affected device. An attacker could exploit this vulnerability by overwriting an installer file stored in the bootflash directory with arbitrary commands that can be executed with root-level privileges. A successful exploit could allow the attacker to read and write changes to the configuration database on the affected device.
Overview
  • CVE ID
  • CVE-2021-34724
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-23T03:15:18
  • Last Modified Date
  • 2021-10-13T12:58:13
Weakness Enumerations
CWE URL
NVD-CWE-Other http://cwe.mitre.org/data/definitions/NVD-Other.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xe_sd-wan:*:*:*:*:*:*:*:* 1 OR 17.3.1a
cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000-esp100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000_series:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp2\):-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp3\):-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-hx_r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-x_r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-hx_r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-x_r:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1023:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_422:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4451:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:N
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • NONE
  • Base Score
  • 6.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 9.2
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:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.8
  • Impact Score
  • 5.2
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-privesc-VP4FG3jD Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-34724
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34724
History
Created Old Value New Value Data Type Notes
2022-05-10 06:51:48 Added to TrackCVE
2022-12-05 11:09:37 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-05 11:09:37 2021-09-23T03:15Z 2021-09-23T03:15:18 CVE Published Date updated
2022-12-05 11:09:37 2021-10-13T12:58:13 CVE Modified Date updated
2022-12-05 11:09:37 Analyzed Vulnerability Status updated