SB2019120422 - Ubuntu update for HAProxy

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Main Vulnerability Database SB2019120422

SB2019120422 - Ubuntu update for HAProxy

Published: December 4, 2019

Security Bulletin ID SB2019120422
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) CRLF injection (CVE-ID: CVE-2019-19330)

CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing CRLF and NUL character in the HTTP request, while converting headers from HTTP/2 to HTTP/1. A remote attacker can send a specially crafted HTTP/2 request to the HAProxy and inject arbitrary HTTP headers. Successful exploitation of the vulnerability may allow an attacker to bypass certain security restrictions or perform spoofing attacks.


Remediation

Install update from vendor's website.

References