Vulnerability-Lookup

OESA-2023-1258 (CVE-2023-29383)

Vulnerability from osv_openeuler – Published: 2023-04-28 11:05 – Updated: 2026-08-06 11:05 – Source website

Summary

shadow security update

Details

This package includes the necessary programs for converting plain password files to the shadow password format and to manage user and group accounts.

Security Fix(es):

In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that "cat /etc/passwd" shows a rogue user account.(CVE-2023-29383)

Severity

3.3 (Low)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-29383	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-debuginfo-4.8.1-7.oe1.aarch64.rpm",
          "shadow-debugsource-4.8.1-7.oe1.aarch64.rpm",
          "shadow-4.8.1-7.oe1.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.8.1-7.oe1.noarch.rpm"
        ],
        "src": [
          "shadow-4.8.1-7.oe1.src.rpm"
        ],
        "x86_64": [
          "shadow-debugsource-4.8.1-7.oe1.x86_64.rpm",
          "shadow-debuginfo-4.8.1-7.oe1.x86_64.rpm",
          "shadow-4.8.1-7.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.8.1-7.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-4.8.1-6.oe1.aarch64.rpm",
          "shadow-debuginfo-4.8.1-6.oe1.aarch64.rpm",
          "shadow-debugsource-4.8.1-6.oe1.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.8.1-6.oe1.noarch.rpm"
        ],
        "src": [
          "shadow-4.8.1-6.oe1.src.rpm"
        ],
        "x86_64": [
          "shadow-debuginfo-4.8.1-6.oe1.x86_64.rpm",
          "shadow-debugsource-4.8.1-6.oe1.x86_64.rpm",
          "shadow-4.8.1-6.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-20.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.8.1-6.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-4.9-7.oe2203.aarch64.rpm",
          "shadow-debuginfo-4.9-7.oe2203.aarch64.rpm",
          "shadow-debugsource-4.9-7.oe2203.aarch64.rpm",
          "shadow-subid-devel-4.9-7.oe2203.aarch64.rpm",
          "shadow-debuginfo-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-subid-devel-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-debugsource-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-4.9-9.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.9-7.oe2203.noarch.rpm",
          "shadow-help-4.9-9.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "shadow-4.9-7.oe2203.src.rpm",
          "shadow-4.9-9.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "shadow-subid-devel-4.9-7.oe2203.x86_64.rpm",
          "shadow-4.9-7.oe2203.x86_64.rpm",
          "shadow-debugsource-4.9-7.oe2203.x86_64.rpm",
          "shadow-debuginfo-4.9-7.oe2203.x86_64.rpm",
          "shadow-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-debugsource-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-debuginfo-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-subid-devel-4.9-9.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-22.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.9-9.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-debuginfo-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-subid-devel-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-debugsource-4.9-9.oe2203sp1.aarch64.rpm",
          "shadow-4.9-9.oe2203sp1.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.9-9.oe2203sp1.noarch.rpm"
        ],
        "src": [
          "shadow-4.9-9.oe2203sp1.src.rpm"
        ],
        "x86_64": [
          "shadow-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-debugsource-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-debuginfo-4.9-9.oe2203sp1.x86_64.rpm",
          "shadow-subid-devel-4.9-9.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.9-9.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Low"
  },
  "details": "This package includes the necessary programs for converting plain password files to the shadow password format and to manage user and group accounts.\r\n\r\nSecurity Fix(es):\r\n\r\nIn Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \\n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \\r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that \u0026quot;cat /etc/passwd\u0026quot; shows a rogue user account.(CVE-2023-29383)",
  "id": "OESA-2023-1258",
  "modified": "2026-08-06T11:05:44Z",
  "published": "2023-04-28T11:05:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1258"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29383"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "shadow security update",
  "upstream": [
    "CVE-2023-29383"
  ]
}

CVE-2023-29383 (GCVE-0-2023-29383)

Vulnerability from cvelistv5 – Published: 2023-04-14 00:00 – Updated: 2025-11-03 19:28

Summary

Severity

No CVSS data available.

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 21:21 UTC

CWE

n/a
CWE-125 - Out-of-bounds Read

Assigner

mitre mitre root Scorecard

References

5 references

URL	Tags
https://github.com/shadow-maint/shadow/pull/687
https://github.com/shadow-maint/shadow/commit/e59…
https://www.trustwave.com/en-us/resources/securit…
https://www.trustwave.com/en-us/resources/blogs/s…
https://lists.debian.org/debian-lts-announce/2025…

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:28:12.823Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/shadow-maint/shadow/pull/687"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-29383",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-06T21:21:27.050601Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-06T21:23:31.283Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \\n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \\r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that \"cat /etc/passwd\" shows a rogue user account."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-14T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/shadow-maint/shadow/pull/687"
        },
        {
          "url": "https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d"
        },
        {
          "url": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797"
        },
        {
          "url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2023-29383",
    "datePublished": "2023-04-14T00:00:00.000Z",
    "dateReserved": "2023-04-05T00:00:00.000Z",
    "dateUpdated": "2025-11-03T19:28:12.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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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.
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OESA-2023-1258 (CVE-2023-29383)

CVE-2023-29383 (GCVE-0-2023-29383)

Tags

Sightings

Nomenclature

Related by attack behaviour