CVE-2020-25578 — MEDIUM (5.3)

Vulnerability Description

In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_off field of the dirent structures returned by VOP_READDIR. In particular, tmpfs(5), smbfs(5), autofs(5) and mqueuefs(5) were failing to do so. As a result, eight uninitialized kernel stack bytes may be leaked to userspace by these file systems.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Freebsd	Freebsd	11.4

Related Weaknesses (CWE)

CWE-665

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20210423-0002/Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:01.fsdisclosure.ascVendor Advisory
https://security.netapp.com/advisory/ntap-20210423-0002/Third Party Advisory

FAQ

What is CVE-2020-25578?

CVE-2020-25578 is a vulnerability with a CVSS score of 5.3 (MEDIUM). In FreeBSD 12.2-STABLE before r368969, 11.4-STABLE before r369047, 12.2-RELEASE before p3, 12.1-RELEASE before p13 and 11.4-RELEASE before p7 several file systems were not properly initializing the d_...

How severe is CVE-2020-25578?

CVE-2020-25578 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-25578?

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