Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title HAProxy vulnerability
Informations
Name USN-4321-1 First vendor Publication 2020-04-07
Vendor Ubuntu Last vendor Modification 2020-04-07
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:P/I:P/A:P)
Cvss Base Score 6.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10 - Ubuntu 18.04 LTS

Summary:

HAProxy could be made to execute arbitrary code if it received a specially crafted HTTP/2 request.

Software Description: - haproxy: fast and reliable load balancing reverse proxy

Details:

Felix Wilhelm discovered that HAProxy incorrectly handled certain HTTP/2 requests. An attacker could possibly use this to execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10:
haproxy 2.0.5-1ubuntu0.4

Ubuntu 18.04 LTS:
haproxy 1.8.8-1ubuntu0.10

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4321-1
CVE-2020-11100

Package Information:
https://launchpad.net/ubuntu/+source/haproxy/2.0.5-1ubuntu0.4
https://launchpad.net/ubuntu/+source/haproxy/1.8.8-1ubuntu0.10

Original Source

Url : http://www.ubuntu.com/usn/USN-4321-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 87
Application 2
Os 2
Os 1
Os 2
Os 1

Alert History

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0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-04-07 17:18:37
  • First insertion