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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4527-1)

high Nessus Plugin ID 140724

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4527-1 advisory.

 - 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)

 - 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)

 - An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
 (CVE-2019-20811)

 - 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)

 - In the Android kernel in F2FS touch driver there is a possible out of bounds read due to improper input validation. This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation. (CVE-2019-9453)

 - In f2fs_xattr_generic_list of xattr.c, 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 required for exploitation.Product: Android. Versions: Android kernel. Android ID:
 A-120551147. (CVE-2020-0067)

 - A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452. (CVE-2020-25212)

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-4527-1

Plugin Details

Severity: High

ID: 140724

File Name: ubuntu_USN-4527-1.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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2020-25212

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1080-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1114-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1139-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1143-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-190-powerpc64-smp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/22/2020

Vulnerability Publication Date: 9/6/2019

Reference Information

CVE: CVE-2019-19054, CVE-2019-19073, CVE-2019-19074, CVE-2019-20811, CVE-2019-9445, CVE-2019-9453, CVE-2020-0067, CVE-2020-25212

USN: 4527-1