PT-2020-4468 · Cisco · Cisco Ftd

Sanmith Prakash · Published 2020-10-21 · Updated 2020-10-23 · CVE-2020-3562

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls (affected versions not specified)

Description A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The issue is due to improper input validation for certain fields of specific SSL/TLS messages, which can also be described as a buffer overflow in memory. An attacker could exploit this by sending a malformed SSL/TLS message through an affected device, causing it to reload and resulting in a DoS condition.

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

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2020-05016

CVE-2020-3562

Affected Products

Cisco Ftd

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2020-3562 · Security Note
• https://bdu.fstec.ru/vul/2020-05016 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3562 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy · Vendor Advisory