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            "lang": "en",
            "value": "RHSA-2024:0764: Red Hat Enterprise Linux AppStream EUS (v.8.6)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0759: Red Hat Enterprise Linux AppStream EUS (v.8.8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0748: Red Hat Enterprise Linux AppStream (v. 8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0752: Red Hat Enterprise Linux AppStream (v. 8)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0756: Red Hat Enterprise Linux AppStream EUS (v.9.0)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0755: Red Hat Enterprise Linux AppStream EUS (v.9.2)"
          },
          {
            "lang": "en",
            "value": "RHSA-2024:0670: Red Hat Enterprise Linux AppStream (v. 9)"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2024-01-17T00:00:00.000Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2024-01-31T20:01:00.000Z",
            "value": "Made public."
          }
        ],
        "title": "runc: file descriptor leak",
        "workarounds": [
          {
            "lang": "en",
            "value": "Red Hat Enterprise Linux (RHEL) and OpenShift ships with SELinux in targeted enforcing mode, which prevents the container processes from accessing host content and mitigates this attack. Dockerfiles can be inspected on the \u0027RUN\u0027\u00a0and \u0027WORKDIR\u0027 directives to ensure that there are no escapes or malicious paths, which are an indication of compromise. Limiting access and only using trusted container images can help prevent unauthorized access and malicious attacks."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "runc",
          "vendor": "opencontainers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=v1.0.0-rc93, \u003c 1.1.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker could cause a newly-spawned container process (from runc exec) to have a working directory in the host filesystem namespace, allowing for a container escape by giving access to the host filesystem (\"attack 2\"). The same attack could be used by a malicious image to allow a container process to gain access to the host filesystem through runc run (\"attack 1\"). Variants of attacks 1 and 2 could be also be used to overwrite semi-arbitrary host binaries, allowing for complete container escapes (\"attack 3a\" and \"attack 3b\"). runc 1.1.12 includes patches for this issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-403",
              "description": "CWE-403: Exposure of File Descriptor to Unintended Control Sphere (\u0027File Descriptor Leak\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-668",
              "description": "CWE-668: Exposure of Resource to Wrong Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-02-19T03:06:14.739Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/opencontainers/runc/security/advisories/GHSA-xr7r-f8xq-vfvv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/opencontainers/runc/security/advisories/GHSA-xr7r-f8xq-vfvv"
        },
        {
          "name": "https://github.com/opencontainers/runc/commit/02120488a4c0fc487d1ed2867e901eeed7ce8ecf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/commit/02120488a4c0fc487d1ed2867e901eeed7ce8ecf"
        },
        {
          "name": "https://github.com/opencontainers/runc/releases/tag/v1.1.12",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/opencontainers/runc/releases/tag/v1.1.12"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/02/01/1"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2024/02/02/3"
        },
        {
          "url": "http://packetstormsecurity.com/files/176993/runc-1.1.11-File-Descriptor-Leak-Privilege-Escalation.html"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SYMO3BANINS6RGFQFKPRG4FIOJ7GWYTL/"
        },
        {
          "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2NLXNE23Q5ESQUAI22Z7A63JX2WMPJ2J/"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00005.html"
        }
      ],
      "source": {
        "advisory": "GHSA-xr7r-f8xq-vfvv",
        "discovery": "UNKNOWN"
      },
      "title": "runc container breakout through process.cwd trickery and leaked fds"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-21626",
    "datePublished": "2024-01-31T21:31:14.391Z",
    "dateReserved": "2023-12-29T03:00:44.953Z",
    "dateUpdated": "2026-07-20T12:05:03.853Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}