runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges…
Priority LOW 31CWE-706Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 6 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
runc through 1.0.0-rc9 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. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)
Why it matters now
EPSS 0.00433 37th percentileScored 2026-11-07
Fix Partial github.com/opencontainers/runc (Go): 1.0.0-rc9.0.20200122160610-2fc03cc11c77Red Hat: 5 advisoriesRed Hat: 6 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/opencontainers/runc (Go) | before 1.0.0-rc9.0.20200122160610-2fc03cc11c77 | 1.0.0-rc9.0.20200122160610-2fc03cc11c77 | Patch available | GHSA-fh74-hm69-rqjw |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/opencontainers/runc (Go) Vendor— Affected before 1.0.0-rc9.0.20200122160610-2fc03cc11c77 Fixed in 1.0.0-rc9.0.20200122160610-2fc03cc11c77 Patch available GHSA-fh74-hm69-rqjw
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* | up to 0.1.1 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc1:*:*:*:*:*:* | 1.0.0 rc1 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc2:*:*:*:*:*:* | 1.0.0 rc2 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc3:*:*:*:*:*:* | 1.0.0 rc3 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc4:*:*:*:*:*:* | 1.0.0 rc4 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc5:*:*:*:*:*:* | 1.0.0 rc5 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc6:*:*:*:*:*:* | 1.0.0 rc6 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc7:*:*:*:*:*:* | 1.0.0 rc7 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc8:*:*:*:*:*:* | 1.0.0 rc8 | Vulnerable | backstage |
| cpe:2.3:a:linuxfoundation:runc:1.0.0:rc9:*:*:*:*:*:* | 1.0.0 rc9 | Vulnerable | backstage |
- cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* Versions up to 0.1.1 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc1:*:*:*:*:*:* Versions 1.0.0 rc1 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc2:*:*:*:*:*:* Versions 1.0.0 rc2 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc3:*:*:*:*:*:* Versions 1.0.0 rc3 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc4:*:*:*:*:*:* Versions 1.0.0 rc4 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc5:*:*:*:*:*:* Versions 1.0.0 rc5 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc6:*:*:*:*:*:* Versions 1.0.0 rc6 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc7:*:*:*:*:*:* Versions 1.0.0 rc7 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc8:*:*:*:*:*:* Versions 1.0.0 rc8 Vulnerable ·backstage
- cpe:2.3:a:linuxfoundation:runc:1.0.0:rc9:*:*:*:*:*:* Versions 1.0.0 rc9 Vulnerable ·backstage
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 19.10 | Vulnerable | Canonical |
| cpe:2.3:a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:openshift_container_platform:4.2:*:*:*:*:*:*:* | 4.2 | Vulnerable | Red Hat |
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
- cpe:2.3:a:redhat:openshift_container_platform:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:openshift_container_platform:4.2:*:*:*:*:*:*:* Versions 4.2 Vulnerable ·Red Hat
Remediation
- Fix · GHSA-fh74-hm69-rqjw github.com/opencontainers/runc (Go) Fixed in 1.0.0-rc9.0.20200122160610-2fc03cc11c77 Advisory →
Red Hat 5 advisories
- RHSA-2020:1650 Released 2020-04-28 · Red Hat rating Moderatecontainer-tools:rhel8 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) buildah-1.11.6-7.module+el8.2.0+5856+b8046c6d.aarch64::container-tools:rhel8, buildah-1.11.6-7.module+el8.2.0+5856+b8046c6d.ppc64le::container-tools:rhel8, buildah-1.11.6-7.module+el8.2.0+5856+b8046c6d.s390x::container-tools:rhel8 +47
- RHSA-2020:1485 Released 2020-04-20 · Red Hat rating ModerateOpenShift Container Platform 4.3.13 runc security update
- Red Hat OpenShift Container Platform 4.3 runc-1.0.0-66.rc10.rhaos4.3.el7_8
- RHSA-2020:0942 Released 2020-03-23 · Red Hat rating Moderaterunc security update
- Red Hat Enterprise Linux 7 Extras runc-1.0.0-66.rc8.el7_7
Show 2 more Red Hat advisories
- RHSA-2020:0695 Released 2020-03-12 · Red Hat rating ModerateOpenShift Container Platform 4.1.38 security update
- Red Hat OpenShift Container Platform 4.1 runc-1.0.0-63.rc8.rhaos4.1.git3cbe540.el8_0
- RHSA-2020:0688 Released 2020-03-10 · Red Hat rating ModerateOpenShift Container Platform 4.2.22 runc security update
- Red Hat OpenShift Container Platform 4.2 runc-1.0.0-63.rc10.rhaos4.2.gitdc9208a.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 Extras | Fixed | RHSA-2020:0942 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:1650 |
| Red Hat OpenShift Container Platform 4.1 | Fixed | RHSA-2020:0695 |
| Red Hat OpenShift Container Platform 4.2 | Fixed | RHSA-2020:0688 |
| Red Hat OpenShift Container Platform 4.3 | Fixed | RHSA-2020:1485 |
| Red Hat OpenShift Container Platform 4.4 | Fixed | — |
Not affected: 2 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19921
- 2026-10-03 Alias added: GHSA-fh74-hm69-rqjw
- 2026-10-30 Fix available: Red Hat OpenShift Container Platform 4.4 · Red Hat
References
Advisory 14
- https://github.com/opencontainers/runc/releases
- https://security-tracker.debian.org/tracker/CVE-2019-19921
- https://github.com/opencontainers/runc/pull/2190
- openSUSE-SU-2020:0219
- RHSA-2020:0688
- RHSA-2020:0695
- GLSA-202003-21
- USN-4297-1
- FEDORA-2023-1bcbb1db39
- FEDORA-2023-3cccbc4c95
- FEDORA-2023-1ba499965f
- FEDORA-2023-9edf2145fb
- FEDORA-2023-6e6d9065e0
- https://nvd.nist.gov/vuln/detail/CVE-2019-19921
Other 11
- [debian-lts-announce] 20230327 [SECURITY] [DLA 3369-1] runc security update
- https://github.com/opencontainers/runc/security/advisories/GHSA-fh74-hm69-rqjw
- https://github.com/opencontainers/runc/pull/2207
- https://github.com/opencontainers/runc/commit/2fc03cc11c775b7a8b2e48d7ee447cb9bef32ad0
- https://usn.ubuntu.com/4297-1
- https://pkg.go.dev/vuln/GO-2021-0087
- https://lists.fedoraproject.org/archives/list/[email protected]/message/I6BF24VCZRFTYBTT3T7HDZUOTKOTNPLZ
- https://lists.fedoraproject.org/archives/list/[email protected]/message/FYVE3GB4OG3BNT5DLQHYO4M5SXX33AQ5
- https://lists.fedoraproject.org/archives/list/[email protected]/message/FNB2UEDIIJCRQW4WJLZOPQJZXCVSXMLD
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DHGVGGMKGZSJ7YO67TGGPFEHBYMS63VF
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ANUGDBJ7NBUMSUFZUSKU3ZMQYZ2Z3STN
Sources
- CVE-2019-19921 · CVE Program
- CVE-2019-19921 · NVD
- FIRST EPSS
- GHSA-fh74-hm69-rqjw · GitHub Advisory Database · CC BY 4.0
- CVE-2019-19921 · Red Hat security data · CC BY 4.0
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