RHEL 7 : kernel-alt (RHSA-2019:2809)

high Nessus Plugin ID 129145
New! Plugin Severity Now Using CVSS v3

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Synopsis

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

Description

An update for kernel-alt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es) :

* Kernel: page cache side channel attacks (CVE-2019-5489)

* Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)

* kernel: broken permission and object lifetime handling for PTRACE_TRACEME (CVE-2019-13272)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es) :

* [kernel-alt]: BUG: unable to handle kernel NULL pointer IP:
crypto_remove_spawns+0x118/0x2e0 (BZ#1536967)

* [HPE Apache] update ssif max_xmit_msg_size limit for multi-part messages (BZ#1610534)

* RHEL-Alt-7.6 - powerpc/pseries: Fix uninitialized timer reset on migration / powerpc/pseries/mobility: Extend start/stop topology update scope (LPM) (BZ #1673613)

* RHEL-Alt-7.6 - s390: sha3_generic module fails and triggers panic when in FIPS mode (BZ#1673979)

* RHEL-Alt-7.6 - System crashed after oom - During ICP deployment (BZ# 1710304)

* kernel-alt: Race condition in hashtables [rhel-alt-7.6.z] (BZ#1712127)

* RHEL-Alt-7.6 - OP930:PM_Test:cpupower -r command set values for first 3 cores in quad and misses last core. (CORAL) (BZ#1717836)

* RHEL-Alt-7.6 - disable runtime NUMA remapping for PRRN/LPM/VPHN (BZ# 1717906)

* fragmented packets timing out (BZ#1729066)

* Backport TCP follow-up for small buffers (BZ#1733617)

Enhancement(s) :

* RHEL-Alt-7.6 - perfevent PMDA cannot create file descriptors for reading nest events using the perf API (pcp/kernel) (CORAL) (BZ#1723036)

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2019:2809

https://access.redhat.com/security/cve/cve-2019-5489

https://access.redhat.com/security/cve/cve-2019-6974

https://access.redhat.com/security/cve/cve-2019-13272

Plugin Details

Severity: High

ID: 129145

File Name: redhat-RHSA-2019-2809.nasl

Version: 1.6

Type: local

Agent: unix

Published: 9/23/2019

Updated: 12/27/2019

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2019-13272

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:perf-debuginfo, p-cpe:/a:redhat:enterprise_linux:python-perf, p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo, cpe:/o:redhat:enterprise_linux:7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/20/2019

Vulnerability Publication Date: 1/7/2019

Exploitable With

Metasploit (Linux Polkit pkexec helper PTRACE_TRACEME local root exploit)

Reference Information

CVE: CVE-2019-13272, CVE-2019-5489, CVE-2019-6974

RHSA: 2019:2809