Denial of service in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-3191
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Cisco Adaptive Security Appliance (ASA)
Hardware solutions / Security hardware applicances

Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Input validation error

EUVDB-ID: #VU27594

Risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-3191

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper length validation of a field in an IPv6 DNS packet. A remote attacker can send a specially crafted DNS query over IPv6 and perform a denial of service (DoS) attack.

Mitigation

Install updarom vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): - - 9.12

Cisco Firepower Threat Defense (FTD): - - 6.4.0

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ipv6-67pA658k


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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