CVE-2020-7455: FreeBSD Kernel NAT Out-Of-Bounds Read Information Disclosure Vulnerability
In FreeBSD 12.1-STABLE before r360973, 12.1-RELEASE before p5, 11.4-STABLE before r360973, 11.4-BETA1 before p1 and 11.3-RELEASE before p9, the FTP packet handler in libalias incorrectly calculates some packet length allowing disclosure of small amounts of kernel (for kernel NAT) or natd process space (for userspace natd).
Other sources
This vulnerability allows local attackers to disclose sensitive information on affected installations of FreeBSD Kernel. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of NAT. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of kernel.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability CVE-2020-7455?
CVE-2020-7455 is a vulnerability in FreeBSD Kernel that allows local attackers to disclose sensitive information.
How severe is the vulnerability CVE-2020-7455?
The severity of CVE-2020-7455 is medium with a CVSS score of 5.5.
What software versions are affected by CVE-2020-7455?
CVE-2020-7455 affects FreeBSD Kernel versions 11.3 to 11.3-p8, 11.4 to 11.4-beta1, and 12.1 to 12.1-p4.
How can I exploit CVE-2020-7455?
To exploit CVE-2020-7455, local authentication is required.
Where can I find more information about CVE-2020-7455?
You can find more information about CVE-2020-7455 in the following references: [link1], [link2], [link3].