Memory leak in FreeBSD - CVE-2017-1081

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Main Vulnerability Database Vulnerabilities #VU6393

Memory leak in FreeBSD - CVE-2017-1081

Published: April 27, 2017 / Updated: April 27, 2017


Vulnerability identifier: #VU6393
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-2017-1081
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD

Detailed vulnerability description

The vulnerability allows a remote attacker to cause denial of service conditions.

The vulnerability exists due to an error within ipfilter(4) implementation, when processing specially crafted fragmented packets and the packet filter is configured to perform stateful packet inspection, using the "keep state" or "keep frags" rule options. A remote attacker can send a series of specially crafted fragmented packets to vulnerable system and trigger kernel panic and system reboot.

Successful exploitation of the vulnerability may allow an attacker to perform a denial of service (DoS) attack.


How to mitigate CVE-2017-1081


Sources