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Fencer Vulns
high 7.0

CVE-2023-27561 json

Opencontainers runc Incorrect Authorization vulnerability

published 2023-03-03 3 y ago modified 2026-09-10 1 mo ago also GHSA-vpvm-3wq2-2wvm , GO-2023-1627 , EUVD-2023-1117

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. NOTE: this issue exists because of a CVE-2019-19921 regression.

Patch / fix

  • go github.com/opencontainers/runc 1.1.5
  • linuxfoundation runc 1.1.5
  • runc Debian 14, Debian 13, Debian 12 1.1.5+ds1-1

debian advisories DEBIAN-CVE-2023-27561

  • runc Ubuntu 18.04 LTS 1.1.4-0ubuntu1~18.04.2
  • runc Ubuntu 20.04 LTS 1.1.4-0ubuntu1~20.04.3
  • runc Ubuntu 22.04 LTS 1.1.4-0ubuntu1~22.04.3
  • runc Ubuntu Pro 16.04 LTS 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4

ubuntu advisories UBUNTU-CVE-2023-27561

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • crit RHEL 8 3.15-3.module+el8.9.0+19243+df4d9ff2
  • criu RHEL 8 3.15-3.module+el8.9.0+19243+df4d9ff2
  • crun RHEL 8 1.8.3-1.module+el8.9.0+19098+6e7a5e3f
  • runc RHEL 8 1:1.1.5-2.module+el8.9.0+19104+fcef53a3
  • udica RHEL 8 0.2.6-4.module+el8.9.0+19098+6e7a5e3f
  • conmon RHEL 8 2:2.1.4-2.module+el8.9.0+19098+6e7a5e3f
  • podman RHEL 8 2:4.0.2-24.module+el8.9.0+19784+443be299
  • skopeo RHEL 8 2:1.6.2-8.module+el8.9.0+19104+fcef53a3

red hat advisories RHSA-2023:6938RHSA-2023:6939RHSA-2023:3612RHSA-2023:6380

  • runc SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +16 more 1.1.5-150000.41.1
  • runc SLE Module for Containers 12 1.1.5-16.29.1

suse advisories SUSE-SU-2023:2003-1SUSE-SU-2023:1726-1

  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250807T150727-1.1
  • runc openSUSE Tumbleweed 1.1.5-1.1
  • kubernetes1.27 openSUSE Tumbleweed 1.27.2-1.1

opensuse advisories openSUSE-SU-2025:15424-1openSUSE-SU-2024:12826-1openSUSE-SU-2024:12992-1

  • crit AlmaLinux 8 3.15-3.module_el8.6.0+3137+d33c3efb
  • crit AlmaLinux 8 3.15-3.module_el8.6.0+2877+8e437bf5
  • criu AlmaLinux 8 3.15-3.module_el8.6.0+2877+8e437bf5
  • criu AlmaLinux 8 3.15-3.module_el8.6.0+3137+d33c3efb
  • crun AlmaLinux 8 1.8.3-1.module_el8.9.0+3627+db8ec155
  • runc AlmaLinux 8 1:1.1.5-2.module_el8.9.0+3627+db8ec155
  • udica AlmaLinux 8 0.2.6-4.module_el8.9.0+3627+db8ec155
  • conmon AlmaLinux 8 2:2.1.4-2.module_el8.9.0+3627+db8ec155

almalinux advisories ALSA-2023:6938ALSA-2023:6939ALSA-2023:6380

  • criu Rocky Linux 8 3.15-3.module+el8.9.0+1445+07728297
  • crun Rocky Linux 8 1.8.3-1.module+el8.9.0+1445+07728297
  • runc Rocky Linux 8 1:1.1.5-2.module+el8.9.0+1445+07728297
  • udica Rocky Linux 8 0.2.6-4.module+el8.9.0+1445+07728297
  • conmon Rocky Linux 8 2:2.1.4-2.module+el8.9.0+1445+07728297
  • podman Rocky Linux 8 2:4.0.2-24.module+el8.9.0+1445+07728297
  • buildah Rocky Linux 8 1:1.24.6-7.module+el8.9.0+1445+07728297
  • libslirp Rocky Linux 8 4.4.0-1.module+el8.9.0+1445+07728297

rocky linux advisories RLSA-2023:6938RLSA-2023:6939

  • runc Alpine 3.17 1.1.4-r6
  • runc Alpine 3.17 1.1.5-r0
  • runc Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.1.4-r0
  • runc Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.1.4-r7

alpine advisories ALPINE-CVE-2023-27561

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • moby-runc CBL-Mariner 2.0 1.1.5-1

azure linux advisories AZL-25574

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2023-27561 updated cvss 7.0

runc: volume mount race condition (regression of CVE-2019-19921)

  • Red Hat Enterprise Linux 7 runc
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 runc
    affected: no fix available
  • Red Hat OpenShift Container Platform 3.11 runc, atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, +8 more
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 openshift4/ose-tests
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) crit 3.15-3.module+el8.9.0+19243+df4d9ff2, crit 3.18-4.module+el8.9.0+19090+d2921118, criu 3.15-3.module+el8.9.0+19243+df4d9ff2, criu 3.18-4.module+el8.9.0+19090+d2921118, crun 1.8.3-1.module+el8.9.0+19098+6e7a5e3f, crun 1.8.7-1.module+el8.9.0+19731+94cfa27e, +60 more
    fixed: vendor fix RHSA-2023:6938
  • Red Hat Enterprise Linux AppStream (v. 9) runc 1.1.9-1.el9
    fixed: vendor fix RHSA-2023:6380
  • Red Hat OpenShift Container Platform 4.13 runc 1.1.6-4.rhaos4.13.el8, openshift4/ose-vsphere-csi-driver-syncer-rhel8 v4.13.0-202304190216.p0.g6f4295b.assembly.stream
    fixed: vendor fix RHSA-2023:1326
  • Red Hat OpenShift Container Platform 4.14 openshift4/ose-vsphere-csi-driver-syncer-rhel8 v4.14.0-202310201027.p0.ga5ed57f.assembly.stream
    fixed: vendor fix RHSA-2023:5006
show 1 more
  • Red Hat OpenShift Container Platform 4 microshift, microshift-olm, microshift-sriov, microshift-multus, microshift-selinux, openshift4/ose-pod, +14 more Red Hat OpenShift Container Platform 4.13 perf 5.14.0-284.18.1.el9_2, rtla 5.14.0-284.18.1.el9_2, bpftool 7.0.0-284.18.1.el9_2, conmon 2.1.7-2.rhaos4.13.el8, kernel 5.14.0-284.18.1.el9_2, podman 4.4.1-4.rhaos4.13.el8, +276 more Red Hat OpenShift Container Platform 4.14 rhcos 414.92.202310210434-0, openshift4/ose-cli v4.14.0-202310201027.p0.g0c63f9d.assembly.stream, openshift4/ose-pod v4.14.0-202310210404.p0.gf67aeb3.assembly.stream, openshift4/ose-tests v4.14.0-202310201027.p0.g948001a.assembly.stream, openshift4/ose-console v4.14.0-202310201027.p0.gc16ab01.assembly.stream, openshift4/ose-coredns v4.14.0-202310201027.p0.gfd70cf1.assembly.stream, +180 more Red Hat OpenShift Container Platform Assisted Installer 1 rhai-tech-preview/assisted-installer-rhel8, rhai-tech-preview/assisted-installer-agent-rhel8, rhai-tech-preview/assisted-installer-reporter-rhel8
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gist.github.com https://gist.github.com/LiveOverflow/c937820b688922eb127fb760ce06dab9 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/opencontainers/runc
>=1.0.0-rc95, <1.1.5
1.1.5

Classification

Weakness
  • CWE-706 Use of Incorrectly-Resolved Name or Reference

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.