CVE-2021-34699

CWE-435CWE-436 — Interpretation Conflict4 documents4 sources
Severity
7.7HIGH
EPSS
0.7%
top 27.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Cisco Cisco IOSCisco IOSCisco IOS XE
Timeline
PublishedSep 23
Latest updateMay 24

Description

A vulnerability in the TrustSec CLI parser of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to an improper interaction between the web UI and the CLI parser. An attacker could exploit this vulnerability by requesting a particular CLI command to be run through the web UI. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HExploitability: 3.1 | Impact: 4.0

Affected Packages3 packages

▶NVDcisco/ios515 versions+514
▶NVDcisco/ios_xe319 versions+318
▶CVEListV5cisco/cisco_iosn/a

🔴Vulnerability Details

2
GHSA
GHSA-6q78-w5mw-hqpj: A vulnerability in the TrustSec CLI parser of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected d↗2022-05-24
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CVEList
Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability↗2021-09-23
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📋Vendor Advisories

1
Cisco
Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability↗2021-09-22
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