Executive Summary

Name CVE-2018-10184 First vendor Publication 2018-05-09
Vendor Cve Last vendor Modification 2018-06-18

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


An issue was discovered in HAProxy before 1.8.8. The incoming H2 frame length was checked against the max_frame_size setting instead of being checked against the bufsize. The max_frame_size only applies to outgoing traffic and not to incoming, so if a large enough frame size is advertised in the SETTINGS frame, a wrapped frame will be defragmented into a temporary allocated buffer where the second fragment may overflow the heap by up to 16 kB. It is very unlikely that this can be exploited for code execution given that buffers are very short lived and their addresses not realistically predictable in production, but the likelihood of an immediate crash is absolutely certain.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10184

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

Application 73
Os 4

Snort® IPS/IDS

Date Description
2019-11-03 HAProxy H2 Frame heap memory corruption attempt
RuleID : 51725 - Revision : 1 - Type : SERVER-WEBAPP

Sources (Detail)

Source Url
CONFIRM http://git.haproxy.org/?p=haproxy-1.8.git;a=commit;h=cd117685f0cff4f2f5577ef6...
REDHAT https://access.redhat.com/errata/RHSA-2018:1372

Alert History

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Date Informations
2021-05-04 13:06:49
  • Multiple Updates
2021-04-22 02:20:29
  • Multiple Updates
2020-05-23 02:10:00
  • Multiple Updates
2020-05-23 01:05:40
  • Multiple Updates
2019-06-27 12:09:31
  • Multiple Updates
2018-06-29 12:05:26
  • Multiple Updates
2018-06-18 21:19:43
  • Multiple Updates
2018-05-17 09:19:38
  • Multiple Updates
2018-05-09 17:19:27
  • First insertion