Executive Summary

Summary
Title HAproxy vulnerability
Informations
Name USN-4174-1 First vendor Publication 2019-11-05
Vendor Ubuntu Last vendor Modification 2019-11-05
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.10 - Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

HAproxy would allow unintended access if ii received specially crafted HTTP request.

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

Details:

It was discovered that HAproxy incorrectly handled certain HTTP requests. An attacker could possibly use this issue to a privilege escalation (Request Smuggling).

Update instructions:

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

Ubuntu 19.10:
haproxy 2.0.5-1ubuntu0.2

Ubuntu 19.04:
haproxy 1.8.19-1ubuntu1.2

Ubuntu 18.04 LTS:
haproxy 1.8.8-1ubuntu0.7

Ubuntu 16.04 LTS:
haproxy 1.6.3-1ubuntu0.3

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

References:
https://usn.ubuntu.com/4174-1
CVE-2019-18277

Package Information:
https://launchpad.net/ubuntu/+source/haproxy/2.0.5-1ubuntu0.2
https://launchpad.net/ubuntu/+source/haproxy/1.8.19-1ubuntu1.2
https://launchpad.net/ubuntu/+source/haproxy/1.8.8-1ubuntu0.7
https://launchpad.net/ubuntu/+source/haproxy/1.6.3-1ubuntu0.3

Original Source

Url : http://www.ubuntu.com/usn/USN-4174-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 86

Alert History

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0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2019-11-05 17:18:50
  • First insertion