What is CVE-2020-7463?

CVE-2020-7463 is a medium-severity vulnerability in Apple Icloud, classified under Use After Free. CVSS score: 5.5/10. Published 2021-03-26.

How severe is CVE-2020-7463?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2020-7463 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Apple Icloud

CVE-2020-7463

In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

Vulnerability class: Use-After-Free

EPSS: 0.004 (32.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apple Icloud
Apple Ipados
Apple Iphone_os
Apple Itunes
Apple Macos
Apple Safari
Apple Tvos
Apple Watchos
Freebsd — versions 11.3, 11.4, 12.1
N/a Freebsd — versions FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

secteam@freebsd.org (x_refsource_MISC, Vendor Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (x_refsource_CONFIRM, Third Party Advisory)
secteam@freebsd.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
secteam@freebsd.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-7463?: CVE-2020-7463 is a medium-severity vulnerability in Apple Icloud, classified under Use After Free. CVSS score: 5.5/10. Published 2021-03-26.
How severe is CVE-2020-7463?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-7463 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.