What is CVE-2020-7464?

CVE-2020-7464 is a medium-severity vulnerability in Freebsd, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2021-03-26.

How severe is CVE-2020-7464?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Freebsd

CVE-2020-7464

In FreeBSD 12.2-STABLE before r365730, 11.4-STABLE before r365738, 12.1-RELEASE before p10, 11.4-RELEASE before p4, and 11.3-RELEASE before p14, a programming error in the ure(4) device driver caused some Realtek USB Ethernet interfaces to incorrectly report packets with more than 2048 bytes in a single USB transfer as having a length of only 2048 bytes. An adversary can exploit this to cause the driver to misinterpret part of the payload of a large packet as a separate packet, and thereby inject packets across security boundaries such as VLANs.

EPSS: 0.007 (50.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Freebsd — versions 11.3, 11.4, 12.1
N/a Freebsd — versions FreeBSD 12.1-RELEASE before p10, 11.4-RELEASE before p4, 11.3-RELEASE before p14

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

secteam@freebsd.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-7464?: CVE-2020-7464 is a medium-severity vulnerability in Freebsd, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2021-03-26.
How severe is CVE-2020-7464?: Medium severity. CVSS v3 base score is 5.3 out of 10.