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Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4387-1)

medium Nessus Plugin ID 137297

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Synopsis

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

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4387-1 advisory.

 - 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)

 - Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0543)

 - A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a denial of service (panic) by corrupting a mountpoint reference counter. (CVE-2020-12114)

 - usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference, aka CID-056ad39ee925. (CVE-2020-12464)

 - An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out- of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.
 (CVE-2020-12659)

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-4387-1

Plugin Details

Severity: Medium

ID: 137297

File Name: ubuntu_USN-4387-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 6/10/2020

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-2020-12659

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 6

Vector: CVSS:3.0/AV:L/AC:L/PR:H/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:canonical:ubuntu_linux:linux-image-5.3.0-1023-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1024-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1026-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1026-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1026-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-1028-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-59-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-59-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3.0-59-lowlatency, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

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: 6/10/2020

Vulnerability Publication Date: 4/17/2020

Reference Information

CVE: CVE-2020-0067, CVE-2020-0543, CVE-2020-12114, CVE-2020-12464, CVE-2020-12659

USN: 4387-1