PT-2021-4695 · Cisco · Cisco Ios Xe Sd-Wan+1

James Spadaro · Published 2021-09-22 · Updated 2023-05-23 · CVE-2021-34723

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE SD-WAN Software (affected versions not specified)

Description A vulnerability in a specific CLI command that is run on Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the configuration database of an affected device. This vulnerability is due to insufficient validation of specific CLI command parameters. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content of the configuration database and gain root-level access to an affected device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exposure of Resource to Wrong Sphere

Weakness Enumeration

CWE-668

Related Identifiers

BDU:2021-05397

CVE-2021-34723

Affected Products

Cisco Ios Xe Sd-Wan

Cisco Ios Xe

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2021-34723 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxesdwan-arbfileov-MVOF3ZZn · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05397 · Security Note
• https://osv.dev/vulnerability/CVE-2021-34723 · Vendor Advisory
• https://t.me/cvenotify/21327 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021092413 · Note
• https://t.me/cibsecurity/29271 · Telegram Post