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SUSE SLED15 / SLES15 Security Update : libeconf, shadow and util-linux (SUSE-SU-2022:0727-1)

medium Nessus Plugin ID 158608

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0727-1 advisory.

 - A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems. (CVE-2021-3995)

 - A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems. (CVE-2021-3996)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.suse.com/1188507

https://bugzilla.suse.com/1192954

https://bugzilla.suse.com/1193632

https://bugzilla.suse.com/1194976

https://www.suse.com/security/cve/CVE-2021-3995

https://www.suse.com/security/cve/CVE-2021-3996

http://www.nessus.org/u?16caa759

Plugin Details

Severity: Medium

ID: 158608

File Name: suse_SU-2022-0727-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 3/5/2022

Updated: 7/14/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2021-3996

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:util-linux-systemd, p-cpe:/a:novell:suse_linux:libblkid1-32bit, p-cpe:/a:novell:suse_linux:libmount-devel, p-cpe:/a:novell:suse_linux:libmount1-32bit, p-cpe:/a:novell:suse_linux:libsmartcols1, p-cpe:/a:novell:suse_linux:util-linux-lang, p-cpe:/a:novell:suse_linux:libuuid1-32bit, p-cpe:/a:novell:suse_linux:util-linux, p-cpe:/a:novell:suse_linux:login_defs, p-cpe:/a:novell:suse_linux:libuuid1, p-cpe:/a:novell:suse_linux:libeconf0, p-cpe:/a:novell:suse_linux:libmount1, p-cpe:/a:novell:suse_linux:libblkid1, p-cpe:/a:novell:suse_linux:libuuid-devel, p-cpe:/a:novell:suse_linux:libblkid-devel-static, p-cpe:/a:novell:suse_linux:libfdisk1, p-cpe:/a:novell:suse_linux:libsmartcols-devel, p-cpe:/a:novell:suse_linux:libblkid-devel, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libfdisk-devel, p-cpe:/a:novell:suse_linux:uuidd, p-cpe:/a:novell:suse_linux:libuuid-devel-static, p-cpe:/a:novell:suse_linux:shadow

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/4/2022

Vulnerability Publication Date: 5/6/2022

Reference Information

CVE: CVE-2021-3995, CVE-2021-3996

SuSE: SUSE-SU-2022:0727-1