SB2018121705 - Amazon Linux AMI update for nginx

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Main Vulnerability Database SB2018121705

SB2018121705 - Amazon Linux AMI update for nginx

Published: December 17, 2018 Updated: December 17, 2018

Security Bulletin ID SB2018121705
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Resource management error (CVE-ID: CVE-2018-16843)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to excessive memory usage when processing HTTP/2 requests within the ngx_http_v2_module module. A remote attacker can send specially crafted HTTP/2 requests to the affected web server and consume all available memory on the system and perform a denial of service (DoS) attack.


2) Resource management error (CVE-ID: CVE-2018-16844)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to excessive CPU usage when processing HTTP/2 requests within the ngx_http_v2_module module. A remote attacker can send specially crafted HTTP/2 requests to the affected web server and cause high CPU usage and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References