PT-2019-3981 · Linux+2 · Linux Kernel+2

Published 2019-11-06 · Updated 2021-07-11 · CVE-2019-18814

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.3.9

Description The issue is related to a use-after-free error in the aa audit rule init() function, located in security/apparmor/audit.c, which can be exploited by a remote attacker to execute arbitrary code. The error occurs when aa label parse() fails in aa audit rule init().

Recommendations For Linux kernel versions prior to 5.3.9, update to version 5.3.9 or later to resolve the issue. As a temporary workaround, consider restricting access to the aa audit rule init() function until a patch is available.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2019-3113

ALT-PU-2019-3136

ALT-PU-2019-3184

ALT-PU-2020-1198

ALT-PU-2020-1421

ALT-PU-2020-1450

ALT-PU-2020-1501

ALT-PU-2020-1714

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2019-04512

CVE-2019-18814

DLA-2323-1

MGASA-2020-0333

OPENSUSE-SU-2021:0532-1

OPENSUSE-SU-2021:0758-1

OPENSUSE-SU-2021:1975-1

OPENSUSE-SU-2021:1977-1

OPENSUSE-SU-2021_0532-1

OPENSUSE-SU-2021_0758-1

OPENSUSE-SU-2021_1975-1

OPENSUSE-SU-2021_1977-1

SUSE-SU-2021:1177-1

SUSE-SU-2021:1211-1

SUSE-SU-2021:1238-1

SUSE-SU-2021:1625-1

SUSE-SU-2021:1975-1

SUSE-SU-2021:1977-1

SUSE-SU-2021_1177-1

SUSE-SU-2021_1211-1

SUSE-SU-2021_1238-1

Affected Products

Alt Linux

Linux Kernel

Suse

References · 439

• https://osv.dev/vulnerability/DEBIAN-CVE-2019-18814 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1625-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:1975-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04512 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2021:1977-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1975-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2020-0333 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-18814 · Security Note
• https://osv.dev/vulnerability/DLA-2323-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0758-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18814 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1977-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-18814 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1238-1 · Vendor Advisory