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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-18277 Detail

Description

A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the "chunked" value were not being correctly rejected. The impact was limited but if combined with the "http-reuse always" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00019.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00019.html
https://git.haproxy.org/?p=haproxy-2.0.git%3Ba=commit%3Bh=196a7df44d8129d1adc795da020b722614d6a581
https://git.haproxy.org/?p=haproxy-2.0.git%3Ba=commit%3Bh=196a7df44d8129d1adc795da020b722614d6a581
https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html
https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html
https://nathandavison.com/blog/haproxy-http-request-smuggling Exploit  Third Party Advisory 
https://nathandavison.com/blog/haproxy-http-request-smuggling Exploit  Third Party Advisory 
https://usn.ubuntu.com/4174-1/
https://usn.ubuntu.com/4174-1/
https://www.mail-archive.com/haproxy%40formilux.org/msg34926.html
https://www.mail-archive.com/haproxy%40formilux.org/msg34926.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-18277
NVD Published Date:
10/23/2019
NVD Last Modified:
11/20/2024
Source:
MITRE