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Fencer Vulns
medium 6.0

CVE-2023-6917 json

Pcp: unsafe use of directories allows pcp to root privilege escalation

published 2024-02-28 2 y ago modified 2026-11-06 3 d ago also EUVD-2023-59116

cvss
6.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

A vulnerability has been identified in the Performance Co-Pilot (PCP) package, stemming from the mixed privilege levels utilized by systemd services associated with PCP. While certain services operate within the confines of limited PCP user/group privileges, others are granted full root privileges. This disparity in privilege levels poses a risk when privileged root processes interact with directories or directory trees owned by unprivileged PCP users. Specifically, this vulnerability may lead to the compromise of PCP user isolation and facilitate local PCP-to-root exploits, particularly through symlink attacks. These vulnerabilities underscore the importance of maintaining robust privilege separation mechanisms within PCP to mitigate the potential for unauthorized privilege escalation.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 0:6.2.0-1.el9
  • pcp Debian 14, Debian 13 6.2.0-1

debian advisories DEBIAN-CVE-2023-6917

  • pcp RHEL 9 6.2.0-1.el9
  • pcp-gui RHEL 9 6.2.0-1.el9
  • pcp-conf RHEL 9 6.2.0-1.el9
  • pcp-libs RHEL 9 6.2.0-1.el9
  • pcp-pmda-dm RHEL 9 6.2.0-1.el9
  • pcp-selinux RHEL 9 6.2.0-1.el9
  • python3-pcp RHEL 9 6.2.0-1.el9
  • pcp-pmda-bcc RHEL 9 6.2.0-1.el9

red hat advisories RHSA-2024:2213

  • pcp Linux Micro 6.1 6.2.0-slfo.1.1_3.1
  • pcp SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 6.2.0-150400.5.12.3
  • pcp Linux Micro 6.0 6.2.0-1.1
  • pcp SLE Software Development Kit 12 SP5 6.2.0-6.29.2
  • pcp SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 6.2.0-150500.8.6.1
  • pcp SLE Module for Development Tools 15 SP6, openSUSE Leap 15.6 6.2.0-150600.3.6.1

suse advisories SUSE-SU-2025:20235-1SUSE-SU-2025:0801-1SUSE-SU-2025:20133-1SUSE-SU-2024:3976-1SUSE-SU-2024:3785-1SUSE-SU-2024:3533-1

  • pcp AlmaLinux 9 6.2.0-1.el9
  • pcp-gui AlmaLinux 9 6.2.0-1.el9
  • pcp-conf AlmaLinux 9 6.2.0-1.el9
  • pcp-libs AlmaLinux 9 6.2.0-1.el9
  • pcp-pmda-dm AlmaLinux 9 6.2.0-1.el9
  • pcp-selinux AlmaLinux 9 6.2.0-1.el9
  • python3-pcp AlmaLinux 9 6.2.0-1.el9
  • pcp-pmda-bcc AlmaLinux 9 6.2.0-1.el9

almalinux advisories ALSA-2024:2213

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-2023-6917 updated cvss 6.0

pcp: unsafe use of directories allows pcp to root privilege escalation

  • Red Hat Enterprise Linux 6 pcp, pcp-gui, pcp-conf, pcp-libs, pcp-webjs, pcp-webapi, +71 more Red Hat Enterprise Linux 7 pcp, pcp-gui, pcp-conf, pcp-libs, pcp-webjs, pcp-webapi, +89 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 pcp, pcp-gui, pcp-conf, pcp-libs, pcp-manager, pcp-pmda-dm, +94 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) pcp 6.2.0-1.el9, pcp-gui 6.2.0-1.el9, pcp-conf 6.2.0-1.el9, pcp-libs 6.2.0-1.el9, pcp-pmda-dm 6.2.0-1.el9, pcp-selinux 6.2.0-1.el9, +95 more
    fixed: vendor fix RHSA-2024:2213

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.