CVE-2020-7462 — MEDIUM (5.5)

Vulnerability Description

In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

CVSS Score

5.5

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Freebsd	Freebsd	11.3

Related Weaknesses (CWE)

CWE-416

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:24.ipv6.ascVendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:24.ipv6.ascVendor Advisory

FAQ

What is CVE-2020-7462?

CVE-2020-7462 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-...

How severe is CVE-2020-7462?

CVE-2020-7462 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-7462?

Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.