CVEvulnerability

CVE-2020-7451

5.3 MEDIUM Published 2020-04-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-04-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-908

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 configurations

• freebsd freebsd 11.3 • freebsd freebsd 12.1

Related

Weakness · CWE (1)

  • CWE-908 Use of Uninitialized Resource weakness

References