Detections
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Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9442)

critical Nessus Plugin ID 153172

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9442 advisory.

 - l2tp: fix race between l2tp_session_delete() and l2tp_tunnel_closeall() (Guillaume Nault) [Orabug:
 33113975] {CVE-2020-0429}
 - l2tp: ensure sessions are freed after their PPPOL2TP socket (Guillaume Nault) [Orabug: 33113975] {CVE-2020-0429}
 - l2tp: Refactor the codes with existing macros instead of literal number (Gao Feng) [Orabug: 33113975] {CVE-2020-0429}
 - l2tp: fix duplicate session creation (Guillaume Nault) [Orabug: 33113975] {CVE-2020-0429}
 - l2tp: ensure session can't get removed during pppol2tp_session_ioctl() (Guillaume Nault) [Orabug:
 33113975] {CVE-2020-0429}
 - l2tp: fix race in l2tp_recv_common() (Guillaume Nault) [Orabug: 33113975] {CVE-2020-0429}
 - net: l2tp: Make l2tp_ip6 namespace aware (Shmulik Ladkani) [Orabug: 33113975] {CVE-2020-0429}
 - l2tp: Correctly return -EBADF from pppol2tp_getname. ([email protected]) [Orabug: 33113975] {CVE-2020-0429}
 - USB: mon: Use scnprintf() for avoiding potential buffer overflow (Takashi Iwai) [Orabug: 33113260] {CVE-2019-9456}
 - usb: usbmon: Read text within supplied buffer size (Pete Zaitcev) [Orabug: 33113260] {CVE-2019-9456}
 - config: remove CONFIG_VGACON_SOFT_SCROLLBACK from kernel configs (Brian Maly) [Orabug: 33047770] {CVE-2020-28097} {CVE-2020-28097}
 - vgacon: remove software scrollback support (Linus Torvalds) [Orabug: 33047770] {CVE-2020-28097}
 - can: bcm: delay release of struct bcm_op after synchronize_rcu() (Thadeu Lima de Souza Cascardo) [Orabug: 33114649] {CVE-2021-3609}
 - can: bcm: fix infoleak in struct bcm_msg_head (Norbert Slusarek) [Orabug: 33030701] {CVE-2021-34693}
 - media: v4l: event: Add subscription to list before calling 'add' operation (Sakari Ailus) [Orabug:
 33113344] {CVE-2019-9458}
 - media: v4l: event: Prevent freeing event subscriptions while accessed (Sakari Ailus) [Orabug: 33113344] {CVE-2019-9458}
 - chardev: Avoid potential use-after-free in 'chrdev_open()' (Will Deacon) [Orabug: 33113412] {CVE-2020-0305}
 - kobject: Export kobject_get_unless_zero() (Jan Kara) [Orabug: 33113412] {CVE-2020-0305}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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://linux.oracle.com/errata/ELSA-2021-9442.html

Plugin Details

Severity: Critical

ID: 153172

File Name: oraclelinux_ELSA-2021-9442.nasl

Version: 1.6

Type: local

Agent: unix

Published: 9/9/2021

Updated: 10/22/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2020-27068

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-debug-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-firmware, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug, cpe:/o:oracle:linux:6

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/8/2021

Vulnerability Publication Date: 8/6/2019

Reference Information

CVE: CVE-2019-9456, CVE-2019-9458, CVE-2020-0305, CVE-2020-0429, CVE-2020-27068, CVE-2020-28097, CVE-2021-34693, CVE-2021-3609