Detections
Analytics

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9086)

high Nessus Plugin ID 147203

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Synopsis

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

Description

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9086 advisory.

 - xen-blkback: fix error handling in xen_blkbk_map() (Jan Beulich) [Orabug: 32492109] {CVE-2021-26930}
 - xen-scsiback: dont 'handle' error by BUG() (Jan Beulich) [Orabug: 32492101] {CVE-2021-26931}
 - xen-netback: dont 'handle' error by BUG() (Jan Beulich) [Orabug: 32492101] {CVE-2021-26931}
 - xen-blkback: dont 'handle' error by BUG() (Jan Beulich) [Orabug: 32492101] {CVE-2021-26931}
 - Xen/gntdev: correct error checking in gntdev_map_grant_pages() (Jan Beulich) [Orabug: 32492093] {CVE-2021-26932}
 - Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() (Jan Beulich) [Orabug: 32492093] {CVE-2021-26932}
 - Xen/x86: also check kernel mapping in set_foreign_p2m_mapping() (Jan Beulich) [Orabug: 32492093] {CVE-2021-26932}
 - Xen/x86: dont bail early from clear_foreign_p2m_mapping() (Jan Beulich) [Orabug: 32492093] {CVE-2021-26932}
 - HID: hid-input: fix stylus battery reporting (Dmitry Torokhov) [Orabug: 32464784] {CVE-2020-0431}
 - nbd: freeze the queue while were adding connections (Josef Bacik) [Orabug: 32447285] {CVE-2021-3348}
 - futex: Handle faults correctly for PI futexes (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Simplify fixup_pi_state_owner() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Use pi_state_update_owner() in put_pi_state() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - rtmutex: Remove unused argument from rt_mutex_proxy_unlock() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Dont enable IRQs unconditionally in put_pi_state() (Dan Carpenter) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Provide and use pi_state_update_owner() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Replace pointless printk in fixup_owner() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - futex: Ensure the correct return value from futex_lock_pi() (Thomas Gleixner) [Orabug: 32447187] {CVE-2021-3347}
 - ovl: check permission to open real file (Miklos Szeredi) [Orabug: 32046372] {CVE-2020-16120}
 - ovl: verify permissions in ovl_path_open() (Miklos Szeredi) [Orabug: 32046372] {CVE-2020-16120}
 - ovl: switch to mounter creds in readdir (Miklos Szeredi) [Orabug: 32046372] {CVE-2020-16120}

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 kernel-uek-container and / or kernel-uek-container-debug packages.

See Also

https://linux.oracle.com/errata/ELSA-2021-9086.html

Plugin Details

Severity: High

ID: 147203

File Name: oraclelinux_ELSA-2021-9086.nasl

Version: 1.7

Type: local

Agent: unix

Published: 3/9/2021

Updated: 10/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2021-3347

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-uek-container, p-cpe:/a:oracle:linux:kernel-uek-container-debug, cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/9/2021

Vulnerability Publication Date: 9/17/2020

Reference Information

CVE: CVE-2020-0431, CVE-2020-16120, CVE-2021-26930, CVE-2021-26931, CVE-2021-26932, CVE-2021-3347, CVE-2021-3348