PT-2021-7063 · Cisco · Cisco Asa+1

Published 2021-11-02 · Updated 2022-05-12 · CVE-2022-20760

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 Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software (affected versions not specified)

Description A vulnerability in the DNS inspection handler could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. This issue is due to a lack of proper processing of incoming requests. An attacker could exploit this vulnerability by sending crafted DNS requests at a high rate to an affected device, potentially causing the device to stop responding.

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

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

BDU:2022-03131

CVE-2022-20760

Affected Products

Cisco Asa

Firepower Threat Defense

References · 9

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-nJVAwOeq · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/679039 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-nJVAwOeq · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-03131 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-20760 · Security Note
• https://osv.dev/vulnerability/CVE-2022-20760 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2022042739 · Note
• https://vuldb.com/?id.198870 · Note
• https://t.me/cvenotify/29596 · Telegram Post