Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4526-1)

high Nessus Plugin ID 140722

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4526-1 advisory.

- A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247.
(CVE-2019-18808)

- A memory leak in the cx23888_ir_probe() function in drivers/media/pci/cx23885/cx23888-ir.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering kfifo_alloc() failures, aka CID-a7b2df76b42b. (CVE-2019-19054)

- A memory leak in the adis_update_scan_mode_burst() function in drivers/iio/imu/adis_buffer.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-9c0530e898f3. (CVE-2019-19061)

- Four memory leaks in the acp_hw_init() function in drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c in the Linux kernel before 5.3.8 allow attackers to cause a denial of service (memory consumption) by triggering mfd_add_hotplug_devices() or pm_genpd_add_device() failures, aka CID-57be09c6e874. NOTE: third parties dispute the relevance of this because the attacker must already have privileges for module loading (CVE-2019-19067)

- Memory leaks in drivers/net/wireless/ath/ath9k/htc_hst.c in the Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption) by triggering wait_for_completion_timeout() failures. This affects the htc_config_pipe_credits() function, the htc_setup_complete() function, and the htc_connect_service() function, aka CID-853acf7caf10. (CVE-2019-19073)

- A memory leak in the ath9k_wmi_cmd() function in drivers/net/wireless/ath/ath9k/wmi.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption), aka CID-728c1e2a05e4.
(CVE-2019-19074)

- In the Android kernel in F2FS driver there is a possible out of bounds read due to a missing bounds check.
This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation. (CVE-2019-9445)

- The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory space. (CVE-2020-12888)

- A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system. (CVE-2020-14356)

- The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c. (CVE-2020-16166)

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 package.

See Also

https://ubuntu.com/security/notices/USN-4526-1

Plugin Details

Severity: High

ID: 140722

File Name: ubuntu_USN-4526-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/22/2020

Updated: 1/9/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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-2020-14356

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: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-118-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1071-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1084-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-118-generic, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1070-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-118-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1054-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1083-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1096-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1097-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1087-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1075-kvm

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/22/2020

Vulnerability Publication Date: 9/6/2019

Reference Information

CVE: CVE-2019-18808, CVE-2019-19054, CVE-2019-19061, CVE-2019-19067, CVE-2019-19073, CVE-2019-19074, CVE-2019-9445, CVE-2020-12888, CVE-2020-14356, CVE-2020-16166

USN: 4526-1