What is CVE-2020-7458?

CVE-2020-7458 is a critical-severity vulnerability in FreeBSD, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-07-09.

How severe is CVE-2020-7458?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in FreeBSD

CVE-2020-7458

In FreeBSD 12.1-STABLE before r362281, 11.4-STABLE before r362281, and 11.4-RELEASE before p1, long values in the user-controlled PATH environment variable cause posix_spawnp to write beyond the end of the heap allocated stack possibly leading to arbitrary code execution.

Vulnerability class: Buffer Overflow

EPSS: 0.019 (77.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freebsd — versions 11.4, 12.1
N/a Freebsd — versions FreeBSD 11.4-RELEASE before p1

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

secteam@freebsd.org (Patch, x_refsource_MISC, Vendor Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2020-7458?: CVE-2020-7458 is a critical-severity vulnerability in FreeBSD, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-07-09.
How severe is CVE-2020-7458?: Critical severity. CVSS v3 base score is 9.8 out of 10.