Vulnerability-Lookup

OESA-2022-1825 (CVE-2021-20269)

Vulnerability from osv_openeuler – Published: 2022-08-13 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

kexec-tools security update

Details

kexec-tools provides /sbin/kexec binary that facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. This package contains the /sbin/kexec binary and ancillary utilities that together form the userspace component of the kernel's kexec feature.

Security Fix(es):

A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality. This flaw affects kexec-tools shipped by Fedora versions prior to 2.0.21-8 and RHEL versions prior to 2.0.20-47.(CVE-2021-20269)

Severity

6.2 (Medium)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-20269	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "kexec-tools-debuginfo-2.0.20-16.oe1.aarch64.rpm",
          "kexec-tools-debugsource-2.0.20-16.oe1.aarch64.rpm",
          "kexec-tools-2.0.20-16.oe1.aarch64.rpm"
        ],
        "noarch": [
          "kexec-tools-help-2.0.20-16.oe1.noarch.rpm"
        ],
        "src": [
          "kexec-tools-2.0.20-16.oe1.src.rpm"
        ],
        "x86_64": [
          "kexec-tools-debugsource-2.0.20-16.oe1.x86_64.rpm",
          "kexec-tools-debuginfo-2.0.20-16.oe1.x86_64.rpm",
          "kexec-tools-2.0.20-16.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "kexec-tools",
        "purl": "pkg:rpm/openEuler/kexec-tools\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.20-16.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "kexec-tools-debuginfo-2.0.20-18.oe1.aarch64.rpm",
          "kexec-tools-debugsource-2.0.20-18.oe1.aarch64.rpm",
          "kexec-tools-2.0.20-18.oe1.aarch64.rpm"
        ],
        "noarch": [
          "kexec-tools-help-2.0.20-18.oe1.noarch.rpm"
        ],
        "src": [
          "kexec-tools-2.0.20-18.oe1.src.rpm"
        ],
        "x86_64": [
          "kexec-tools-debuginfo-2.0.20-18.oe1.x86_64.rpm",
          "kexec-tools-debugsource-2.0.20-18.oe1.x86_64.rpm",
          "kexec-tools-2.0.20-18.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "kexec-tools",
        "purl": "pkg:rpm/openEuler/kexec-tools\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.20-18.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "kexec-tools-debugsource-2.0.23-5.oe2203.aarch64.rpm",
          "kexec-tools-2.0.23-5.oe2203.aarch64.rpm",
          "kexec-tools-debuginfo-2.0.23-5.oe2203.aarch64.rpm"
        ],
        "noarch": [
          "kexec-tools-help-2.0.23-5.oe2203.noarch.rpm"
        ],
        "src": [
          "kexec-tools-2.0.23-5.oe2203.src.rpm"
        ],
        "x86_64": [
          "kexec-tools-debugsource-2.0.23-5.oe2203.x86_64.rpm",
          "kexec-tools-debuginfo-2.0.23-5.oe2203.x86_64.rpm",
          "kexec-tools-2.0.23-5.oe2203.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "kexec-tools",
        "purl": "pkg:rpm/openEuler/kexec-tools\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.23-5.oe2203"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "kexec-tools provides /sbin/kexec binary that facilitates a new kernel to boot using the kernel\u0026apos;s kexec feature either on a normal or a panic reboot. This package contains the /sbin/kexec binary and ancillary utilities that together form the userspace component of the kernel\u0026apos;s kexec feature.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality. This flaw affects kexec-tools shipped by Fedora versions prior to 2.0.21-8 and RHEL versions prior to 2.0.20-47.(CVE-2021-20269)",
  "id": "OESA-2022-1825",
  "modified": "2026-08-06T11:05:05Z",
  "published": "2022-08-13T11:05:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1825"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20269"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kexec-tools security update",
  "upstream": [
    "CVE-2021-20269"
  ]
}

CVE-2021-20269 (GCVE-0-2021-20269)

Vulnerability from cvelistv5 – Published: 2022-03-09 16:29 – Updated: 2024-08-03 17:37

Summary

Severity

No CVSS data available.

CWE

CWE-276

Assigner

redhat redhat root

References

1 reference

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1934261	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	kexec-tools	Affected: Fedora kexec-tools versions prior to 2.0.21-8 and RHEL kexec-tools versions prior to 2.0.20-47

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:37:23.203Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934261"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kexec-tools",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fedora kexec-tools versions prior to 2.0.21-8 and RHEL kexec-tools versions prior to 2.0.20-47"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality. This flaw affects kexec-tools shipped by Fedora versions prior to 2.0.21-8 and RHEL versions prior to 2.0.20-47."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-276",
              "description": "CWE-276",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-03-09T16:29:47.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934261"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-20269",
    "datePublished": "2022-03-09T16:29:47.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:37:23.203Z",
    "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.