PT-2020-5118 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2020-10-08 · CVE-2020-3516

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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

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 issue is due to insufficient input validation during authentication, which could be exploited by entering unexpected characters during a valid authentication. A successful exploit could allow the attacker to crash the web server, requiring manual recovery by disabling and re-enabling the web server.

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

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-05714

CVE-2020-3516

Affected Products

Cisco Ios Xe

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-3516 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-WEB-UI-exNFmcPO · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3516 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-05714 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-WEB-UI-exNFmcPO · Vendor Advisory