Detections
Analytics

OracleVM 3.4 : kernel-uek (OVMSA-2021-0039)

medium Nessus Plugin ID 155946

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Synopsis

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

Description

The remote OracleVM system is missing necessary patches to address security updates:

 - A security issue was found in Linux kernel's OverlayFS subsystem where a local attacker who has the ability to mount the TmpFS filesystem with OverlayFS can abuse a logic bug in the overlayfs code which can inadvertently reveal files hidden in the original mount. (CVE-2021-3732)

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

Solution

Update the affected kernel-uek / kernel-uek-firmware packages.

See Also

https://linux.oracle.com/cve/CVE-2021-3732.html

https://linux.oracle.com/errata/OVMSA-2021-0039.html

Plugin Details

Severity: Medium

ID: 155946

File Name: oraclevm_OVMSA-2021-0039.nasl

Version: 1.4

Type: local

Published: 12/8/2021

Updated: 3/31/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-3732

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:oracle:vm:kernel-uek, cpe:/o:oracle:vm_server:3.4, p-cpe:/a:oracle:vm:kernel-uek-firmware

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/6/2021

Vulnerability Publication Date: 9/30/2021

Reference Information

CVE: CVE-2021-3732