Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : nginx vulnerabilities (USN-3812-1)

High Nessus Plugin ID 118820

Synopsis

The remote Ubuntu host is missing one or more security-related
patches.

Description

It was discovered that nginx incorrectly handled the HTTP/2
implementation. A remote attacker could possibly use this issue to
cause excessive memory consumption, leading to a denial of service.
This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu
18.10. (CVE-2018-16843)

Gal Goldshtein discovered that nginx incorrectly handled the HTTP/2
implementation. A remote attacker could possibly use this issue to
cause excessive CPU usage, leading to a denial of service. This issue
only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10.
(CVE-2018-16844)

It was discovered that nginx incorrectly handled the
ngx_http_mp4_module module. A remote attacker could possibly use this
issue with a specially crafted mp4 file to cause nginx to crash, stop
responding, or access arbitrary memory. (CVE-2018-16845).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/3812-1/

Plugin Details

Severity: High

ID: 118820

File Name: ubuntu_USN-3812-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2018/11/08

Modified: 2018/12/13

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

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

CVSS v3.0

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:nginx-common, p-cpe:/a:canonical:ubuntu_linux:nginx-core, p-cpe:/a:canonical:ubuntu_linux:nginx-extras, p-cpe:/a:canonical:ubuntu_linux:nginx-full, p-cpe:/a:canonical:ubuntu_linux:nginx-light, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

Patch Publication Date: 2018/11/07

Reference Information

CVE: CVE-2018-16843, CVE-2018-16844, CVE-2018-16845

USN: 3812-1

IAVB: 2018-B-0143