CVE-2020-7451

Published: Apr 28, 2020Modified: Nov 21, 2024

5.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 3.9 / Impact: 1.4

Source: NVD

Description

In FreeBSD 12.1-STABLE before r358739, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r358740, and 11.3-RELEASE before 11.3-RELEASE-p7, a TCP SYN-ACK or challenge TCP-ACK segment over IPv6 that is transmitted or retransmitted does not properly initialize the Traffic Class field disclosing one byte of kernel memory over the network.

Affected (10)

Products: Freebsd: Freebsd

Freebsd

1 product

Freebsd

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Freebsd Freebsd	Version 11.3
Freebsd Freebsd	Version 11.3 p1
Freebsd Freebsd	Version 11.3 p2
Freebsd Freebsd	Version 11.3 p3
Freebsd Freebsd	Version 11.3 p4
Freebsd Freebsd	Version 11.3 p5
Freebsd Freebsd	Version 11.3 p6
Freebsd Freebsd	Version 12.1
Freebsd Freebsd	Version 12.1 p1
Freebsd Freebsd	Version 12.1 p2

Related CWEs

CWE-908

Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

References (2)

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.asc

Source: secteam@freebsd.org

PatchVendor Advisory

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.asc

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

Timeline

No history available yet.