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Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5845)

critical Nessus Plugin ID 140499

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Synopsis

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

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5845 advisory.

 - sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices (Dave Chiluk) [Orabug: 31350999] {CVE-2019-19922}
 - sched/fair: Fix throttle_list starvation with low CFS quota (Phil Auld) [Orabug: 31350999] {CVE-2019-19922}
 - sched/fair: Fix bandwidth timer clock drift condition (Xunlei Pang) [Orabug: 31350999] {CVE-2019-19922}
 - btrfs: tree-checker: Verify block_group_item (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: tree-check: reduce stack consumption in check_dir_item (David Sterba) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: tree-checker: use %zu format string for size_t (Arnd Bergmann) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: tree-checker: Add checker for dir item (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: tree-checker: Fix false panic for sanity test (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: tree-checker: Enhance btrfs_check_node output (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: Move leaf and node validation checker to tree-checker.c (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: Add checker for EXTENT_CSUM (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: Add sanity check for EXTENT_DATA when reading out leaf (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: Check if item pointer overlaps with the item itself (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - btrfs: Refactor check_leaf function for later expansion (Qu Wenruo) [Orabug: 31351986] {CVE-2018-14613}
 - nfsd: apply umask on fs without ACL support (J. Bruce Fields) [Orabug: 31779888] {CVE-2020-24394}
 - sctp: implement memory accounting on tx path (Xin Long) [Orabug: 31351959] {CVE-2019-3874}
 - vhost_net: fix possible infinite loop (Jason Wang) [Orabug: 31351949] {CVE-2019-3900} {CVE-2019-3900}
 - vhost: introduce vhost_exceeds_weight() (Jason Wang) [Orabug: 31351949] {CVE-2019-3900}
 - vhost_net: introduce vhost_exceeds_weight() (Jason Wang) [Orabug: 31351949] {CVE-2019-3900}
 - vhost_net: use packet weight for rx handler, too (Paolo Abeni) [Orabug: 31351949] {CVE-2019-3900}
 - vhost-net: set packet weight of tx polling to 2 * vq size (haibinzhang() [Orabug: 31351949] {CVE-2019-3900}
 - repair kABI breakage from 'fs: prevent page refcount overflow in pipe_buf_get' (Dan Duval) [Orabug:
 31351940] {CVE-2019-11487}
 - fs: prevent page refcount overflow in pipe_buf_get (Matthew Wilcox) [Orabug: 31351940] {CVE-2019-11487}
 - mm: add 'try_get_page()' helper function (Linus Torvalds) [Orabug: 31351940] {CVE-2019-11487}
 - mm: prevent get_user_pages() from overflowing page refcount (Linus Torvalds) [Orabug: 31351940] {CVE-2019-11487}
 - mm: make page ref count overflow check tighter and more explicit (Linus Torvalds) [Orabug: 31351940] {CVE-2019-11487}
 - tracing: Fix buffer_ref pipe ops (Jann Horn) [Orabug: 31351940] {CVE-2019-11487}

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-2020-5845.html

Plugin Details

Severity: Critical

ID: 140499

File Name: oraclelinux_ELSA-2020-5845.nasl

Version: 1.7

Type: local

Agent: unix

Published: 9/11/2020

Updated: 11/1/2024

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-2019-17133

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-headers, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:perf, p-cpe:/a:oracle:linux:kernel-uek-devel, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:kernel-uek-tools-libs-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:python-perf, p-cpe:/a:oracle:linux:kernel-uek-tools, p-cpe:/a:oracle:linux:kernel-uek-tools-libs, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug

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: 9/11/2020

Vulnerability Publication Date: 7/27/2018

Reference Information

CVE: CVE-2018-14613, CVE-2018-16884, CVE-2019-10638, CVE-2019-10639, CVE-2019-11487, CVE-2019-14898, CVE-2019-15218, CVE-2019-16746, CVE-2019-17075, CVE-2019-17133, CVE-2019-18885, CVE-2019-19052, CVE-2019-19063, CVE-2019-19066, CVE-2019-19073, CVE-2019-19074, CVE-2019-19078, CVE-2019-19535, CVE-2019-19922, CVE-2019-20812, CVE-2019-3874, CVE-2019-3900, CVE-2019-5108, CVE-2020-10751, CVE-2020-10767, CVE-2020-10769, CVE-2020-10781, CVE-2020-12114, CVE-2020-12771, CVE-2020-14331, CVE-2020-16166, CVE-2020-24394

BID: 104917, 106253, 107488, 108054, 108076, 109092