CVE-2018-17244 — elasticsearch: Information Exposure due to improper set request headers

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MEDIUM

elasticsearch: Information Exposure due to improper set request headers

Published Dec 20, 2018

6.5

MEDIUM

CVSS 3.0

EPSS 1.46%

Description

Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.

Affected products

Vendor Elastic Product Elasticsearch Default
n/a
- Version
  6.4.0 to 6.4.2
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Elastic

Elasticsearch

n/a

Version	Status	Constraints
6.4.0 to 6.4.2	affected	-

Red Hat Decision Manager 7

elasticsearch

Not affected
Red Hat Fuse 7

elasticsearch

Not affected
Red Hat JBoss Fuse 6

elasticsearch

Out of support scope
Red Hat OpenShift Container Platform 3.10

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.11

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.2

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.3

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.4

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.5

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.6

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.7

elasticsearch

Not affected
Red Hat OpenShift Container Platform 3.9

elasticsearch

Not affected
Red Hat OpenShift Enterprise 3.0

elasticsearch

Not affected
Red Hat OpenShift Enterprise 3.1

elasticsearch

Not affected
Red Hat OpenStack Platform 8 (Liberty) Operational Tools

elasticsearch

Not affected
Red Hat OpenStack Platform 9 (Mitaka) Operational Tools

elasticsearch

Not affected
Red Hat Process Automation 7

elasticsearch

Not affected
Red Hat Subscription Asset Manager

elasticsearch

Not affected

Product	Package	State	Advisory
Red Hat Decision Manager 7	elasticsearch	Not affected	n/a
Red Hat Fuse 7	elasticsearch	Not affected	n/a
Red Hat JBoss Fuse 6	elasticsearch	Out of support scope	n/a
Red Hat OpenShift Container Platform 3.10	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.11	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.2	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.3	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.4	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.5	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.6	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.7	elasticsearch	Not affected	n/a
Red Hat OpenShift Container Platform 3.9	elasticsearch	Not affected	n/a
Red Hat OpenShift Enterprise 3.0	elasticsearch	Not affected	n/a
Red Hat OpenShift Enterprise 3.1	elasticsearch	Not affected	n/a
Red Hat OpenStack Platform 8 (Liberty) Operational Tools	elasticsearch	Not affected	n/a
Red Hat OpenStack Platform 9 (Mitaka) Operational Tools	elasticsearch	Not affected	n/a
Red Hat Process Automation 7	elasticsearch	Not affected	n/a
Red Hat Subscription Asset Manager	elasticsearch	Not affected	n/a

Remediation

No remediation recorded yet.

Metrics

1.46% 0.01456

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01456

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.46% (0.01456)	72.56th	v5 (v2026.06.15)
Sep 20, 2026	1.46% (0.01456)	72.31th	v5 (v2026.06.15)
Jul 20, 2024	0.10% (0.00101)	42.02th	v3 (v2023.03.01)
Dec 14, 2023	0.10% (0.00101)	41.03th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00115)	43.64th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00890)	30.33th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00890)	12.04th	v2 (v2022.01.01)
Feb 3, 2022	0.83% (0.00833)	24.58th	v5 (v2026.06.15)
Apr 14, 2021	0.83% (0.00833)	0.00th	v1

Weaknesses (2)

CWE-200

Exposure of Sensitive Information

CWE-362

Race Condition

References (8)

http://www.securityfocus.com/bid/106318
vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2018-17244
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1661626
Issue Tracking
https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594
x_refsource_MISCVendor Advisory
https://github.com/advisories/GHSA-vpqm-88c4-x4cv
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-17244
https://www.cve.org/CVERecord?id=CVE-2018-17244
https://www.elastic.co/community/security
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://www.securityfocus.com/bid/106318		vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/CVE-2018-17244		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1661626		Issue Tracking
https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594		x_refsource_MISCVendor Advisory
https://github.com/advisories/GHSA-vpqm-88c4-x4cv		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-17244
https://www.cve.org/CVERecord?id=CVE-2018-17244
https://www.elastic.co/community/security		x_refsource_CONFIRMVendor Advisory