CVE-2025-65105: Github.com/apptainer/apptainer Apptainer Ineffectively Applies Selinux And Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j3rw-fx6g-q46j",
  "modified" : "2025-12-02T21:10:04Z",
  "published" : "2025-12-02T21:10:04Z",
  "aliases" : [ "CVE-2025-65105" ],
  "summary" : "Apptainer ineffectively applies selinux and apparmor --security options",
  "details" : "### Impact\nIn 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.\n\nIn addition, a bug in the detection of selinux support in Apptainer's suid mode means that `--security selinux:<label>` flags may not be applied, even in the absence of an attack.  In that case a warning message is emitted indicating that selinux is unavailable, but the warning may be may be overlooked, mis-interpreted, or not seen when apptainer is run from a script or other tool.  Failure to apply requested restrictions should result in a fatal error rather than just a warning message.\n\n### Patches\nIneffective write of selinux process labels is addressed via an update to the containers/selinux dependency in https://github.com/apptainer/apptainer/pull/3226. That update brings in the upstream fix for https://github.com/advisories/GHSA-cgrx-mc8f-2prm which was for a different but related vulnerability.\n\nIneffective write of apparmor process profiles is addressed in commit 4313b42.\n\nFailure to detect apparmor / selinux support, when --security flags are provided, is made an error rather than a warning in commit 82f1790.\n\n### Workarounds\nThere are no known workarounds, other than to define system-wide apparmor / selinux policy for Apptainer itself. This would apply to all containers, not just those run with the `--security` flags, and could impact the operation of Apptainer itself.\n\n### References\nThanks to Sylabs for finding this issue, fixing it in https://github.com/sylabs/singularity/security/advisories/GHSA-wwrx-w7c9-rf87 which was easy to import into Apptainer, and disclosing it early to the Apptainer project for a coordinated release.\n\nThe related upstream runc disclosure which inspired the investigation is https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/apptainer/apptainer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/apptainer/apptainer/security/advisories/GHSA-j3rw-fx6g-q46j"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/sylabs/singularity/security/advisories/GHSA-wwrx-w7c9-rf87"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-65105"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apptainer/apptainer/pull/3226"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apptainer/apptainer/commit/4313b42717e18a4add7dd7503528bc15af905981"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apptainer/apptainer/commit/82f17900a0c31bc769bf9b4612d271c7068d8bf2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apptainer/apptainer"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-61", "CWE-706" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-02T21:10:04Z",
    "nvd_published_at" : "2025-12-02T18:15:48Z"
  }
}