Vulnerability-Lookup

OESA-2023-1077 (CVE-2022-47952)

Vulnerability from osv_openeuler – Published: 2023-02-10 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

lxc security update

Details

Containers are insulated areas inside a system, which have their own namespace for filesystem, network, PID, IPC, CPU and memory allocation and which can be created using the Control Group and Namespace features included in the Linux kernel.

Security Fix(es):

lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.(CVE-2022-47952)

Severity

3.3 (Low)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2022-47952	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "lxc-devel-4.0.3-2022102408.oe2203sp1.aarch64.rpm",
          "lxc-libs-4.0.3-2022102408.oe2203sp1.aarch64.rpm",
          "lxc-debugsource-4.0.3-2022102408.oe2203sp1.aarch64.rpm",
          "lxc-debuginfo-4.0.3-2022102408.oe2203sp1.aarch64.rpm",
          "lxc-4.0.3-2022102408.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "lxc-help-4.0.3-2022102408.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "lxc-4.0.3-2022102408.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "lxc-debuginfo-4.0.3-2022102408.oe2203sp1.x86_64.rpm",
          "lxc-debugsource-4.0.3-2022102408.oe2203sp1.x86_64.rpm",
          "lxc-libs-4.0.3-2022102408.oe2203sp1.x86_64.rpm",
          "lxc-4.0.3-2022102408.oe2203sp1.x86_64.rpm",
          "lxc-devel-4.0.3-2022102408.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "lxc",
        "purl": "pkg:rpm/openEuler/lxc\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.3-2022102408.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Low"
  },
  "details": "Containers are insulated areas inside a system, which have their own namespace for filesystem, network, PID, IPC, CPU and memory allocation and which can be created using the Control Group and Namespace features included in the Linux kernel.\r\n\r\nSecurity Fix(es):\r\n\r\nlxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because \u0026quot;Failed to open\u0026quot; often indicates that a file does not exist, whereas \u0026quot;does not refer to a network namespace path\u0026quot; often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that \u0026quot;we will report back to the user that the open() failed but the user has no way of knowing why it failed\u0026quot;; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.(CVE-2022-47952)",
  "id": "OESA-2023-1077",
  "modified": "2026-08-06T11:05:33Z",
  "published": "2023-02-10T11:05:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1077"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47952"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "lxc security update",
  "upstream": [
    "CVE-2022-47952"
  ]
}

CVE-2022-47952 (GCVE-0-2022-47952)

Vulnerability from cvelistv5 – Published: 2023-01-01 00:00 – Updated: 2025-04-10 19:16

Summary

Severity

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-10 19:15 UTC

CWE

n/a
CWE-203 - Observable Discrepancy

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9…
https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9…
https://bugs.launchpad.net/ubuntu/+source/lxc/+bu…
https://github.com/MaherAzzouzi/CVE-2022-47952
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T15:02:36.654Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/lxc.spec.in#L274"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/src/lxc/cmd/lxc_user_nic.c#L1085-L1104"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591/comments/45"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/MaherAzzouzi/CVE-2022-47952"
          },
          {
            "name": "[debian-lts-announce] 20230821 [SECURITY] [DLA 3533-1] lxc security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00025.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 3.3,
              "baseSeverity": "LOW",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-47952",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-10T19:15:58.513634Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-203",
                "description": "CWE-203 Observable Discrepancy",
                "lang": "en",
                "type": "CWE"
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            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-10T19:16:28.295Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
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            }
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      ],
      "descriptions": [
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          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-21T22:06:16.179Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/lxc.spec.in#L274"
        },
        {
          "url": "https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/src/lxc/cmd/lxc_user_nic.c#L1085-L1104"
        },
        {
          "url": "https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591/comments/45"
        },
        {
          "url": "https://github.com/MaherAzzouzi/CVE-2022-47952"
        },
        {
          "name": "[debian-lts-announce] 20230821 [SECURITY] [DLA 3533-1] lxc security update",
          "tags": [
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          "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00025.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2022-47952",
    "datePublished": "2023-01-01T00:00:00.000Z",
    "dateReserved": "2022-12-24T00:00:00.000Z",
    "dateUpdated": "2025-04-10T19:16:28.295Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.