OracleVM 3.4 : kernel-uek (OVMSA-2021-0025)

high Nessus Plugin ID 152398

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 memory disclosure flaw was found in the Linux kernel's ethernet drivers, in the way it read data from the EEPROM of the device. This flaw allows a local user to read uninitialized values from the kernel memory. The highest threat from this vulnerability is to confidentiality. (CVE-2020-14304)

- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)

- net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller. (CVE-2021-32399)

- fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

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 kernel-uek / kernel-uek-firmware packages.

See Also

https://linux.oracle.com/errata/OVMSA-2021-0025.html

https://linux.oracle.com/cve/CVE-2021-33909.html

https://linux.oracle.com/cve/CVE-2020-14304.html

https://linux.oracle.com/cve/CVE-2021-22555.html

https://linux.oracle.com/cve/CVE-2021-32399.html

Plugin Details

Severity: High

ID: 152398

File Name: oraclevm_OVMSA-2021-0025.nasl

Version: 1.6

Type: local

Published: 8/10/2021

Updated: 3/31/2022

Risk Information

CVSS Score Source: CVE-2021-33909

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

Temporal Vector: CVSS2#E:H/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:vm:kernel-uek:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:vm:kernel-uek-firmware:*:*:*:*:*:*:*

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/4/2021

Vulnerability Publication Date: 9/15/2020

Exploitable With

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2020-14304, CVE-2021-32399, CVE-2021-22555, CVE-2021-33909