SB2022042571 - IBM Cloud Private update for nginx 

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Main Vulnerability Database SB2022042571

SB2022042571 - IBM Cloud Private update for nginx

Published: April 25, 2022

Security Bulletin ID SB2022042571
Severity
Medium
Patch available
YES
Number of vulnerabilities 4
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 4 secuirty vulnerabilities.


1) 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.


2) Buffer over-read (CVE-ID: CVE-2018-16845)

The vulnerability allows a remote attacker to gain access to potentially sensitive information or trigger denial of service conditions.

The vulnerability exists due to a boundary condition when processing headers of MP4 files within the ngx_http_mp4_module module. A remote attacker can create a specially crafted MP4 file, trick the victim into uploading it on the server and trigger application crash or disclosure of the worker's process memory.

Successful exploitation of the vulnerability requires that nginx is compiled with support for ngx_http_mp4_module module (not a default configuration).


3) 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.


4) Heap-based buffer overflow (CVE-ID: CVE-2019-7401)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to a boundary error when processing malicious input. A remote attacker can supply a specially crafted request, trigger heap-based buffer overflow and cause the router process to crash.


Remediation

Install update from vendor's website.

References