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Fencer Vulns
high 8.7

CVE-2018-1079 json

pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call.

published 2018-04-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11731

cvss
8.7
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call. The REST interface of the pcsd service did not properly sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.

Patch / fix

  • pcs Debian 14, Debian 13, Debian 12 0.9.164-1

debian advisories DEBIAN-CVE-2018-1079

  • pcs RHEL 7 0.9.162-5.el7_5.1
  • pcs-snmp RHEL 7 0.9.162-5.el7_5.1

red hat advisories RHSA-2018:1060

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1079 updated cvss 8.7

pcs: Privilege escalation via authorized user malicious REST call

  • Red Hat Enterprise Linux Server High Availability (v. 7) pcs 0.9.162-5.el7_5.1, pcs-snmp 0.9.162-5.el7_5.1 Red Hat Enterprise Linux Server Resilient Storage (v. 7) pcs 0.9.162-5.el7_5.1, pcs-snmp 0.9.162-5.el7_5.1
    fixed: vendor fix RHSA-2018:1060
  • Red Hat Enterprise Linux 6 pcs Red Hat Enterprise Linux 8 pcs, pcs-snmp Red Hat Storage 3 pcs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.7 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:P/A:N

Affected products

  • unspecified pcs

Classification

Weakness
  • CWE-552 Files or Directories Accessible to External Parties
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.