CVE-2018-1086: clusterlabs pacemaker_command_line_interface Improper Input Validation
Vulnerability summary
CVE-2018-1086 is a high (CVSS 7.5) Improper Input Validation vulnerability in clusterlabs pacemaker_command_line_interface. EPSS estimates a 1.92% chance of exploitation in the next 30 days, higher than 79.8% of scored vulnerabilities.
Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 12-04-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
6 scores · 5 sources · 2 versions- CVE.orgCNA4.3MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NDiffers
- OSV · Red hatEcosystem advisory · calculated4.3MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.92%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.92% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorThe product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat4 products
- enterprise_linux_server_eus7.5 | 7.6
- pcspcs 0.9.164 | pcs 0.10
- pcs< 0:0.9.155-3.el6
- pcs-debuginfo< 0:0.9.155-3.el6
Debian2 products
- pcs< 0.9.155+dfsg-2+deb9u1 | < 0.9.164-1
- debian_linuxEOL9.0
Clusterlabs1 product
- pacemaker_command_line_interface0.9.164 | 0.10
Ubuntu1 product
- pcs< 0.9.149-1ubuntu1.1+esm1
4 vendors · 8 products
References
16 links- access.redhat.com/errata/RHSA-2018:1927Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
