Double Free in Cisco Firewall Threat Defense (FTD) - CVE-2020-3179

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Main Vulnerability Database Vulnerabilities #VU27590

Double Free in Cisco Firewall Threat Defense (FTD) - CVE-2020-3179

Published: May 7, 2020


Vulnerability identifier: #VU27590
CSH Severity: High
CVSS v4.0: 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-2020-3179
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Firewall Threat Defense (FTD)

Detailed vulnerability description

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

The vulnerability exists due to a memory handling error when the generic routing encapsulation (GRE) over IPv6 traffic is processed. A remote attacker can send a specially crafted GRE over IPv6 packets with either IPv4 or IPv6 payload, trigger double free error and cause a denial of service condition on the target system.



How to mitigate CVE-2020-3179

Install update from vendor's website.

Sources