SUSE update for libeconf, shadow and util-linux

Published: 2022-03-04

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-3995 CVE-2021-3996
CWE-ID	CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Linux Enterprise Module for Transactional Server Operating systems & Components / Operating system SUSE Linux Enterprise Desktop Operating systems & Components / Operating system SUSE Manager Server Operating systems & Components / Operating system SUSE Manager Proxy Operating systems & Components / Operating system SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system SUSE Linux Enterprise Module for Server Applications Operating systems & Components / Operating system util-linux-lang Operating systems & Components / Operating system package or component login_defs Operating systems & Components / Operating system package or component libuuid1-32bit-debuginfo Operating systems & Components / Operating system package or component libuuid1-32bit Operating systems & Components / Operating system package or component libmount1-32bit-debuginfo Operating systems & Components / Operating system package or component libmount1-32bit Operating systems & Components / Operating system package or component libblkid1-32bit-debuginfo Operating systems & Components / Operating system package or component libblkid1-32bit Operating systems & Components / Operating system package or component util-linux-systemd Operating systems & Components / Operating system package or component util-linux-debugsource Operating systems & Components / Operating system package or component util-linux-debuginfo Operating systems & Components / Operating system package or component util-linux Operating systems & Components / Operating system package or component shadow-debugsource Operating systems & Components / Operating system package or component shadow-debuginfo Operating systems & Components / Operating system package or component shadow Operating systems & Components / Operating system package or component libuuid1-debuginfo Operating systems & Components / Operating system package or component libuuid1 Operating systems & Components / Operating system package or component libuuid-devel-static Operating systems & Components / Operating system package or component libuuid-devel Operating systems & Components / Operating system package or component libsmartcols1-debuginfo Operating systems & Components / Operating system package or component libsmartcols1 Operating systems & Components / Operating system package or component libsmartcols-devel Operating systems & Components / Operating system package or component libmount1-debuginfo Operating systems & Components / Operating system package or component libmount1 Operating systems & Components / Operating system package or component libmount-devel Operating systems & Components / Operating system package or component libfdisk1-debuginfo Operating systems & Components / Operating system package or component libfdisk1 Operating systems & Components / Operating system package or component libfdisk-devel Operating systems & Components / Operating system package or component libblkid1-debuginfo Operating systems & Components / Operating system package or component libblkid1 Operating systems & Components / Operating system package or component libblkid-devel-static Operating systems & Components / Operating system package or component libblkid-devel Operating systems & Components / Operating system package or component uuidd-debuginfo Operating systems & Components / Operating system package or component uuidd Operating systems & Components / Operating system package or component util-linux-systemd-debugsource Operating systems & Components / Operating system package or component util-linux-systemd-debuginfo Operating systems & Components / Operating system package or component libeconf0-debuginfo Operating systems & Components / Operating system package or component libeconf0 Operating systems & Components / Operating system package or component libeconf-debugsource Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU60004

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3995

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper parsing of the /proc/self/mountinfo file in libmount. A local user can unmount other user's filesystems that are either world-writable themselves or mounted in a world-writable directory.

Mitigation

Update the affected package libeconf, shadow and util-linux to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 15-SP3-LTSS

SUSE Linux Enterprise High Performance Computing: 15-SP3-LTSS

SUSE Linux Enterprise Module for Transactional Server: 15-SP3

SUSE Linux Enterprise Desktop: 15-SP3

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

SUSE Linux Enterprise Micro: 5.1

SUSE Linux Enterprise Server for SAP Applications: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

SUSE Linux Enterprise Module for Server Applications: 15-SP3

util-linux-lang: before 2.36.2-150300.4.14.3

login_defs: before 4.8.1-150300.4.3.8

libuuid1-32bit-debuginfo: before 2.36.2-150300.4.14.3

libuuid1-32bit: before 2.36.2-150300.4.14.3

libmount1-32bit-debuginfo: before 2.36.2-150300.4.14.3

libmount1-32bit: before 2.36.2-150300.4.14.3

libblkid1-32bit-debuginfo: before 2.36.2-150300.4.14.3

libblkid1-32bit: before 2.36.2-150300.4.14.3

util-linux-systemd: before 2.36.2-150300.4.14.2

util-linux-debugsource: before 2.36.2-150300.4.14.3

util-linux-debuginfo: before 2.36.2-150300.4.14.3

util-linux: before 2.36.2-150300.4.14.3

shadow-debugsource: before 4.8.1-150300.4.3.8

shadow-debuginfo: before 4.8.1-150300.4.3.8

shadow: before 4.8.1-150300.4.3.8

libuuid1-debuginfo: before 2.36.2-150300.4.14.3

libuuid1: before 2.36.2-150300.4.14.3

libuuid-devel-static: before 2.36.2-150300.4.14.3

libuuid-devel: before 2.36.2-150300.4.14.3

libsmartcols1-debuginfo: before 2.36.2-150300.4.14.3

libsmartcols1: before 2.36.2-150300.4.14.3

libsmartcols-devel: before 2.36.2-150300.4.14.3

libmount1-debuginfo: before 2.36.2-150300.4.14.3

libmount1: before 2.36.2-150300.4.14.3

libmount-devel: before 2.36.2-150300.4.14.3

libfdisk1-debuginfo: before 2.36.2-150300.4.14.3

libfdisk1: before 2.36.2-150300.4.14.3

libfdisk-devel: before 2.36.2-150300.4.14.3

libblkid1-debuginfo: before 2.36.2-150300.4.14.3

libblkid1: before 2.36.2-150300.4.14.3

libblkid-devel-static: before 2.36.2-150300.4.14.3

libblkid-devel: before 2.36.2-150300.4.14.3

uuidd-debuginfo: before 2.36.2-150300.4.14.2

uuidd: before 2.36.2-150300.4.14.2

util-linux-systemd-debugsource: before 2.36.2-150300.4.14.2

util-linux-systemd-debuginfo: before 2.36.2-150300.4.14.2

libeconf0-debuginfo: before 0.4.4+git20220104.962774f-150300.3.6.2

libeconf0: before 0.4.4+git20220104.962774f-150300.3.6.2

libeconf-debugsource: before 0.4.4+git20220104.962774f-150300.3.6.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220727-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU60005