Apptainer ineffective application of selinux and apparmor --security options
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Apptainer is an open source container platform. In Apptainer versions less than 1.4.5, a container can disable two of the forms of the little used --security option, in particular the forms --security=apparmor:<profile> and --security=selinux:<label> which otherwise put restrictions on operations that containers can do. The --security option has always been mentioned in Apptainer documentation as being a feature for the root user, although these forms do also work for unprivileged users on systems where the corresponding feature is enabled. Apparmor is enabled by default on Debian-based distributions and SElinux is enabled by default on RHEL-based distributions, but on SUSE it depends on the distribution version. This vulnerability is fixed in 1.4.5.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MLflow | apptainer | before 1.4.5 | 1.4.5 | Patch available | CNA |
| — | github.com/apptainer/apptainer (Go) | before 1.4.5 | 1.4.5 | Patch available | GHSA-j3rw-fx6g-q46j |
- apptainer VendorMLflow Affected before 1.4.5 Fixed in 1.4.5 Patch available CNA
- github.com/apptainer/apptainer (Go) Vendor— Affected before 1.4.5 Fixed in 1.4.5 Patch available GHSA-j3rw-fx6g-q46j
Remediation
- Fix · CNA apptainer (apptainer) Fixed in 1.4.5
- Fix · GHSA-j3rw-fx6g-q46j github.com/apptainer/apptainer (Go) Fixed in 1.4.5 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2025-65105
- 2026-10-03 Alias added: GHSA-j3rw-fx6g-q46j
References
Patch 3
More MLflow Apptainer vulnerabilities
- TI-2023-14384 Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer CVSS 3.1HIGH 7.8
- TI-2023-19876 Apptainer's ineffective privileges drop when requesting container network CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-65105 · CVE Program
- CVE-2025-65105 · NVD
- FIRST EPSS
- GHSA-j3rw-fx6g-q46j · GitHub Advisory Database · CC BY 4.0
- CVE-2025-65105 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences