Vulnerability · Published Sep 24, 2020 · Assigned by cisco

CVE-2020-3516Cisco IOS XE Software Web UI Improper Input Validation Vulnerability

Medium 4.3

In plain English

A medium-severity improper input validation in Cisco IOS XE Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.0)4.3Medium

Exploit odds (30 days)1.7%top 23.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. An attacker could exploit this vulnerability by entering unexpected characters during a valid authentication. A successful exploit could allow the attacker to crash the web server on the device, which must be manually recovered by disabling and re-enabling the web server.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software	n/a

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

20200924 Cisco IOS XE Software Web UI Improper Input Validation Vulnerability vendor-advisory, x_refsource_CISCO