CVE-2019-18277
HAProxy HTTP Request Smuggling Vulnerability
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).
INFO
Published Date :
Oct. 23, 2019, 2:15 p.m.
Last Modified :
Nov. 7, 2023, 3:06 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2019-18277 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-18277.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
C Python PowerShell Lua
None
A curated list of awesome blogs and tools about HTTP request smuggling attacks. Feel free to contribute! 🍻
awesome requestsmuggling http bugbounty security awesome-list http-desync-attacks request-smuggling http-smuggling
Awesome CSIRT is an curated list of links and resources in security and CSIRT daily activities.
security csirt awesome awesome-list malware-analysis threat-intelligence pentesting exfiltration secure-programming cve poc reverse-engineering exploits
Python C Lua PowerShell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-18277 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18277 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://www.mail-archive.com/haproxy%40formilux.org/msg34926.html [No types assigned] Added Reference MITRE https://git.haproxy.org/?p=haproxy-2.0.git%3Ba=commit%3Bh=196a7df44d8129d1adc795da020b722614d6a581 [No types assigned] Removed Reference MITRE https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581 Removed Reference MITRE https://www.mail-archive.com/[email protected]/msg34926.html -
CVE Modified by [email protected]
Jun. 02, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/05/msg00045.html [No Types Assigned] -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-20 CWE-444 -
CVE Modified by [email protected]
Dec. 05, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00019.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 04, 2019
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00016.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 05, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4174-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 25, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581 No Types Assigned https://git.haproxy.org/?p=haproxy-2.0.git;a=commit;h=196a7df44d8129d1adc795da020b722614d6a581 Patch, Vendor Advisory Changed Reference Type https://nathandavison.com/blog/haproxy-http-request-smuggling No Types Assigned https://nathandavison.com/blog/haproxy-http-request-smuggling Exploit, Third Party Advisory Changed Reference Type https://www.mail-archive.com/[email protected]/msg34926.html No Types Assigned https://www.mail-archive.com/[email protected]/msg34926.html Release Notes Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18277 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-18277
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.60 }} 0.30%
score
0.87718
percentile