RHEL 7 : kernel-alt (RHSA-2020:2854)

medium Nessus Plugin ID 143086
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2854 advisory.

- kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

- kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)

- kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

- kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c (CVE-2019-18808)

- kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS (CVE-2019-19062)

- kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c and fs/ext4/super.c (CVE-2019-19767)

- kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

- kernel: use after free due to race condition in the video driver leads to local privilege escalation (CVE-2019-9458)

- kernel: use-after-free read in napi_gro_frags() in the Linux kernel (CVE-2020-10720)

- kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

- Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

- Kernel: ppc: kvm: conflicting use of HSTATE_HOST_R1 to store r1 state leads to host stack corruption (CVE-2020-8834)

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 packages.

See Also

https://cwe.mitre.org/data/definitions/121.html

https://cwe.mitre.org/data/definitions/248.html

https://cwe.mitre.org/data/definitions/362.html

https://cwe.mitre.org/data/definitions/400.html

https://cwe.mitre.org/data/definitions/416.html

https://cwe.mitre.org/data/definitions/787.html

https://access.redhat.com/security/cve/CVE-2018-16884

https://access.redhat.com/security/cve/CVE-2019-9458

https://access.redhat.com/security/cve/CVE-2019-11811

https://access.redhat.com/security/cve/CVE-2019-15917

https://access.redhat.com/security/cve/CVE-2019-18808

https://access.redhat.com/security/cve/CVE-2019-19062

https://access.redhat.com/security/cve/CVE-2019-19767

https://access.redhat.com/security/cve/CVE-2019-20636

https://access.redhat.com/security/cve/CVE-2020-8834

https://access.redhat.com/security/cve/CVE-2020-10720

https://access.redhat.com/security/cve/CVE-2020-11565

https://access.redhat.com/security/cve/CVE-2020-12888

https://access.redhat.com/errata/RHSA-2020:2854

https://bugzilla.redhat.com/1660375

https://bugzilla.redhat.com/1709180

https://bugzilla.redhat.com/1760100

https://bugzilla.redhat.com/1775021

https://bugzilla.redhat.com/1777418

https://bugzilla.redhat.com/1781204

https://bugzilla.redhat.com/1786160

https://bugzilla.redhat.com/1819377

https://bugzilla.redhat.com/1819615

https://bugzilla.redhat.com/1824059

https://bugzilla.redhat.com/1824918

https://bugzilla.redhat.com/1836244

Plugin Details

Severity: Medium

ID: 143086

File Name: redhat-RHSA-2020-2854.nasl

Version: 1.5

Type: local

Agent: unix

Published: 11/19/2020

Updated: 7/21/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2019-20636

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-perf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/7/2020

Vulnerability Publication Date: 12/18/2018

Reference Information

CVE: CVE-2018-16884, CVE-2019-9458, CVE-2019-11811, CVE-2019-15917, CVE-2019-18808, CVE-2019-19062, CVE-2019-19767, CVE-2019-20636, CVE-2020-8834, CVE-2020-10720, CVE-2020-11565, CVE-2020-12888

BID: 106253, 108410

RHSA: 2020:2854

CWE: 121, 248, 362, 400, 416, 787