PT-2020-9767 · Freebsd · Freebsd

Published 2020-05-12 · Updated 2020-05-18 · CVE-2019-15879

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 12.1-STABLE before r356908 FreeBSD versions 12.1-RELEASE before p5 FreeBSD versions 11.3-STABLE before r356908 FreeBSD versions 11.3-RELEASE before p9

Description A race condition in the cryptodev module permitted a data structure in the kernel to be used after it was freed, allowing an unprivileged process to overwrite arbitrary kernel memory.

Recommendations For FreeBSD versions 12.1-STABLE before r356908, update to a version after r356908 to resolve the issue. For FreeBSD versions 12.1-RELEASE before p5, update to a version after p5 to resolve the issue. For FreeBSD versions 11.3-STABLE before r356908, update to a version after r356908 to resolve the issue. For FreeBSD versions 11.3-RELEASE before p9, update to a version after p9 to resolve the issue. As a temporary workaround, consider disabling the cryptodev module until a patch is available.

Fix

Race Condition

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-362

CWE-772

Related Identifiers

CVE-2019-15879

FREEBSD-SA-20_15

Affected Products

Freebsd

References · 7

• https://osv.dev/vulnerability/CVE-2019-15879 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-15879 · Security Note
• https://security.freebsd.org/advisories/FreeBSD-SA-20:15.cryptodev.asc · Vendor Advisory
• https://freebsd.org/security/advisories/FreeBSD-SA-20:15.cryptodev.asc · Note
• https://t.me/cvenotify/3742 · Telegram Post
• https://security.netapp.com/advisory/ntap-20200518-0005 · Note
• https://t.me/cibsecurity/12044 · Telegram Post