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Cisco Firepower Threat Defense Software NULL Character Obfuscation Detection Bypass Vulnerability

cisco-sa-20190816-ftd-null · Medium · Published · Updated

A vulnerability in the normalization functionality of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to insufficient normalization of a text-based payload. An attacker could exploit this vulnerability by sending traffic that contains specifically obfuscated payloads through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious payloads to protected systems that would otherwise be blocked. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-null

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2019-1981
Cisco Bug IDsCSCvq39915
CVSS ScoreBase 5.8
Base 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
Product Names From Source
Cisco FirePOWER Services Software for ASA, Cisco Firepower Threat Defense Software 6.0.0, Cisco Firepower Threat Defense Software 6.0.1, Cisco Firepower Threat Defense Software 6.0.1.3, Cisco Firepower Threat Defense Software 6.0.1.1, Cisco Firepower Threat Defense Software 6.0.1.2, Cisco Firepower Threat Defense Software 6.0.1.4, Cisco Firepower Threat Defense Software 5.3.0, Cisco Firepower Threat Defense Software 5.4.0, Cisco Firepower Threat Defense Software 6.1.0, Cisco Firepower Threat Defense Software 6.1.0.2, Cisco Firepower Threat Defense Software 6.1.0.1, Cisco Firepower Threat Defense Software 6.1.0.3, Cisco Firepower Threat Defense Software 6.1.0.4, Cisco Firepower Threat Defense Software 6.1.0.5, Cisco Firepower Threat Defense Software 6.1.0.6, Cisco Firepower Threat Defense Software 6.1.0.7, Cisco Firepower Threat Defense Software 6.2.0, Cisco Firepower Threat Defense Software 6.2.1, Cisco Firepower Threat Defense Software 6.2.2, Cisco Firepower Threat Defense Software 6.2.0.1, Cisco Firepower Threat Defense Software 6.2.0.2, Cisco Firepower Threat Defense Software 6.2.0.3, Cisco Firepower Threat Defense Software 6.2.0.4, Cisco Firepower Threat Defense Software 6.2.2.1, Cisco Firepower Threat Defense Software 6.2.2.2, Cisco Firepower Threat Defense Software 6.2.3, Cisco Firepower Threat Defense Software 6.2.3.1, Cisco Firepower Threat Defense Software 6.2.3.2, Cisco Firepower Threat Defense Software 6.2.3.3, Cisco Firepower Threat Defense Software 6.2.3.4, Cisco Firepower Threat Defense Software 6.2.3.5, Cisco Firepower Threat Defense Software 6.2.2.3, Cisco Firepower Threat Defense Software 6.2.2.4, Cisco Firepower Threat Defense Software 6.2.0.5, Cisco Firepower Threat Defense Software 6.2.0.6, Cisco Firepower Threat Defense Software 6.2.3.6, Cisco Firepower Threat Defense Software 6.2.0.7, Cisco Firepower Threat Defense Software 6.2.2.5, Cisco Firepower Threat Defense Software 6.2.3.7, Cisco Firepower Threat Defense Software 6.2.3.8, Cisco Firepower Threat Defense Software 6.2.3.10, Cisco Firepower Threat Defense Software 6.2.3.11, Cisco Firepower Threat Defense Software 6.2.3.9, Cisco Firepower Threat Defense Software 6.2.3.12, Cisco Firepower Threat Defense Software 6.3.0, Cisco Firepower Threat Defense Software 6.3.0.1, Cisco Firepower Threat Defense Software 6.3.0.2, Cisco Firepower Threat Defense Software 6.3.0.3, Cisco Firepower Threat Defense Software 6.4.0, Cisco Firepower Threat Defense Software 6.4.0.1, Cisco Firepower Threat Defense Software 6.4.0.3, Cisco Firepower Threat Defense Software 6.5.0, Cisco Secure Firewall Threat Defense (FTD) Software

Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2019-1981 Cisco OpenVuln
Cisco Firepower Threat Defense Software CVE-2019-1981 Cisco OpenVuln
Cisco Firepower Management Center CVE-2019-1981 Cisco OpenVuln
Cisco FirePOWER Services Software for ASA CVE-2019-1981 Cisco OpenVuln