CVE-2019-18277

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Source
https://cve.org/CVERecord?id=CVE-2019-18277
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18277.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-18277
Downstream
Related
Published
2019-10-23T14:15:10.557Z
Modified
2026-07-08T17:16:57.071708Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

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).

References

Affected packages

Git / github.com/haproxy/haproxy

Affected ranges

Type
GIT
Repo
https://github.com/haproxy/haproxy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b57f10996625e073650a5da8ef01e11cfe9018ea
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.0.6"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.1.0
v1.1.1
v1.1.10
v1.1.11
v1.1.12
v1.1.13
v1.1.14
v1.1.15
v1.1.16
v1.1.17
v1.1.18
v1.1.19
v1.1.2
v1.1.20
v1.1.21
v1.1.22
v1.1.23
v1.1.24
v1.1.25
v1.1.26
v1.1.27
v1.1.3
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v1.1.9
v1.2.0
v1.2.1
v1.2.1-pre1
v1.2.1-pre2
v1.2.1-pre3
v1.2.10
v1.2.10.1
v1.2.11
v1.2.11.1
v1.2.12
v1.2.13
v1.2.13.1
v1.2.14
v1.2.2
v1.2.3
v1.2.4
v1.2.5
v1.2.5-pre1
v1.2.5-pre2
v1.2.5-pre3
v1.2.5-pre4
v1.2.5.1
v1.2.5.2
v1.2.6
v1.2.6-pre4
v1.2.6-pre5
v1.2.7
v1.2.7.1
v1.2.7rc
v1.2.8
v1.2.9
v1.3.0
v1.3.1
v1.3.10
v1.3.10.1
v1.3.10.2
v1.3.11
v1.3.11.1
v1.3.11.2
v1.3.11.3
v1.3.11.4
v1.3.12
v1.3.13
v1.3.14
v1.3.15
v1.3.16
v1.3.16-rc1
v1.3.16-rc2
v1.3.17
v1.3.18
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.6.1
v1.3.7
v1.3.8
v1.3.8.1
v1.3.8.2
v1.3.9
v1.4-dev0
v1.4-dev1
v1.4-dev2
v1.4-dev3
v1.4-dev4
v1.4-dev5
v1.4-dev6
v1.4-dev7
v1.4-dev8
v1.4-rc1
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.4.4
v1.4.5
v1.4.6
v1.5-dev10
v1.5-dev12
v1.5-dev13
v1.5-dev14
v1.5-dev15
v1.5-dev16
v1.5-dev17
v1.5-dev18
v1.5-dev19
v1.5-dev20
v1.5-dev21
v1.5-dev22
v1.5-dev23
v1.5-dev24
v1.5-dev25
v1.5-dev26
v1.5-dev8
v1.5-dev9
v1.5.0
v1.6-dev0
v1.6-dev1
v1.6-dev2
v1.6-dev3
v1.6-dev4
v1.6-dev5
v1.6-dev6
v1.6-dev7
v1.6.0
v1.7-dev0
v1.7-dev1
v1.7-dev2
v1.7-dev3
v1.7-dev4
v1.7-dev5
v1.7-dev6
v1.7.0
v1.8-dev0
v1.8-dev1
v1.8-dev2
v1.8-dev3
v1.8-rc1
v1.8-rc2
v1.8-rc3
v1.8-rc4
v1.8.0
v1.9-dev0
v1.9-dev1
v1.9-dev10
v1.9-dev11
v1.9-dev2
v1.9-dev3
v1.9-dev4
v1.9-dev5
v1.9-dev6
v1.9-dev7
v1.9-dev8
v1.9-dev9
v1.9.0
v2.*
v2.0-dev0
v2.0-dev1
v2.0-dev2
v2.0-dev3
v2.0-dev4
v2.0-dev5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18277.json"