Executive Summary

Informations
Name CVE-2020-3516 First vendor Publication 2020-09-24
Vendor Cve Last vendor Modification 2020-10-08

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Overall CVSS Score 4.3
Base Score 4.3 Environmental Score 4.3
impact SubScore 1.4 Temporal Score 4.3
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact Low
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:N/I:N/A:P)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3516

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 14
Os 954

Snort® IPS/IDS

Date Description
2020-12-08 Cisco IOS XE WebUI restricted character in authentication detected
RuleID : 55833 - Revision : 1 - Type : POLICY-OTHER

Sources (Detail)

Source Url
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...

Alert History

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Date Informations
2021-10-14 01:41:06
  • Multiple Updates
2021-10-13 01:41:09
  • Multiple Updates
2021-10-08 12:42:23
  • Multiple Updates
2021-10-08 01:41:30
  • Multiple Updates
2021-05-04 13:52:22
  • Multiple Updates
2021-04-22 03:03:13
  • Multiple Updates
2021-03-31 01:34:19
  • Multiple Updates
2021-03-30 01:34:24
  • Multiple Updates
2020-12-08 21:24:01
  • Multiple Updates
2020-11-25 01:29:43
  • Multiple Updates
2020-10-08 21:23:04
  • Multiple Updates
2020-10-08 17:22:55
  • Multiple Updates
2020-09-25 00:23:00
  • First insertion