PT-2021-2554 · Cisco · Cisco Ios Xe

X.B · Published 2021-03-24 · Updated 2022-08-05 · CVE-2021-1443

Positive Technologies (AI Summary)

CVSS v2.0

8.5

High

Base vector

AV:N/AC:M/Au:S/C:C/I:C/A:C

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

Description: A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary code with root privileges on the underlying operating system of an affected device. The vulnerability exists because the affected software improperly sanitizes values that are parsed from a specific configuration file. An attacker could exploit this vulnerability by tampering with a specific configuration file and then sending an API call. A successful exploit could allow the attacker to inject arbitrary code that would be executed on the underlying operating system of the affected device. To exploit this vulnerability, the attacker would need to have a privileged set of credentials to the device.

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

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

BDU:2021-01962

CVE-2021-1443

Affected Products

Cisco Ios Xe

References · 7

• https://osv.dev/vulnerability/CVE-2021-1443 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-os-cmd-inj-Ef6TV5e9 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01962 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-os-cmd-inj-Ef6TV5e9 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1443 · Security Note
• https://t.me/cvenotify/12253 · Telegram Post
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc · Note