CVE-2018-1086 — pcs: Debug parameter removal bypass, allowing information disclosure

Back Back to CVE browser

HIGH

pcs: Debug parameter removal bypass, allowing information disclosure

Published Apr 12, 2018

7.5

HIGH

CVSS 3.0

EPSS 1.92%

Description

pcs before versions 0.9.164 and 0.10 is vulnerable to a debug parameter removal bypass. REST interface of the pcsd service did not properly remove the pcs debug argument from the /run_pcs query, possibly disclosing sensitive information. A remote attacker with a valid token could use this flaw to elevate their privilege.

Affected products

Vendor Red Hat Product Pcs Default
n/a
- Version
  pcs 0.10
  Status
  affected
  Constraints
  -
- Version
  pcs 0.9.164
  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

Red Hat

Pcs

n/a

Version	Status	Constraints
pcs 0.10	affected	-
pcs 0.9.164	affected	-

Red Hat Enterprise Linux 6

pcs-0:0.9.155-3.el6

Fixed · RHSA-2018:1927
Red Hat Enterprise Linux 7

pcs-0:0.9.162-5.el7_5.1

Fixed · RHSA-2018:1060
Red Hat Enterprise Linux 8

pcs

Not affected
Red Hat Storage 3

pcs

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 6	pcs-0:0.9.155-3.el6	Fixed	RHSA-2018:1927
Red Hat Enterprise Linux 7	pcs-0:0.9.162-5.el7_5.1	Fixed	RHSA-2018:1060
Red Hat Enterprise Linux 8	pcs	Not affected	n/a
Red Hat Storage 3	pcs	Not affected	n/a

Remediation

No remediation recorded yet.

Metrics

1.92% 0.01916

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01916

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (15 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	1.92% (0.01916)	79.11th	v5 (v2026.06.15)
Jun 15, 2026	1.65% (0.01655)	73.44th	v5 (v2026.06.15)
Nov 29, 2025	0.20% (0.00200)	42.21th	v4 (v2025.03.14)
Jul 20, 2024	0.41% (0.00408)	74.05th	v3 (v2023.03.01)
Jul 16, 2024	0.41% (0.00408)	74.03th	v3 (v2023.03.01)
Apr 5, 2024	0.58% (0.00578)	77.67th	v3 (v2023.03.01)
Nov 6, 2023	0.58% (0.00578)	75.66th	v3 (v2023.03.01)
Oct 13, 2023	0.45% (0.00447)	72.12th	v3 (v2023.03.01)
Sep 3, 2023	0.53% (0.00530)	74.12th	v3 (v2023.03.01)
Jul 8, 2023	0.75% (0.00751)	78.52th	v3 (v2023.03.01)
Mar 7, 2023	1.80% (0.01798)	86.20th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)
Feb 3, 2022	1.31% (0.01306)	31.19th	v5 (v2026.06.15)
Apr 14, 2021	1.31% (0.01306)	0.00th	v1

Weaknesses (2)

CWE-20

Improper Input Validation

CWE-200

Exposure of Sensitive Information

References (8)

https://access.redhat.com/errata/RHSA-2018:1060
vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2018:1927
vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2018-1086
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1557366
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1086
x_refsource_MISCIssue TrackingThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-1086
https://www.cve.org/CVERecord?id=CVE-2018-1086
https://www.debian.org/security/2018/dsa-4169
vendor-advisoryx_refsource_DEBIANThird Party Advisory

Link	Providers	Tags
https://access.redhat.com/errata/RHSA-2018:1060		vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2018:1927		vendor-advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/security/cve/CVE-2018-1086		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1557366		Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1086		x_refsource_MISCIssue TrackingThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-1086
https://www.cve.org/CVERecord?id=CVE-2018-1086
https://www.debian.org/security/2018/dsa-4169		vendor-advisoryx_refsource_DEBIANThird Party Advisory