Vulnerability-Lookup

OESA-2023-1687 (CVE-2023-4641)

Vulnerability from osv_openeuler – Published: 2023-09-28 11:06 – Updated: 2026-08-06 11:06 – 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):

When gpasswd(1) asks for the new password, it asks twice (as is usual for confirming the new password). Each of those 2 password prompts uses agetpass() to get the password. If the second agetpass() fails, the first password, which has been copied into the 'static' buffer 'pass' via STRFCPY(), wasn't being zeroed.(CVE-2023-4641)

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-2023-4641	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-debuginfo-4.8.1-9.oe1.aarch64.rpm",
          "shadow-debugsource-4.8.1-9.oe1.aarch64.rpm",
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        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
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            },
            {
              "fixed": "4.8.1-9.oe1"
            }
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-debuginfo-4.8.1-8.oe1.aarch64.rpm",
          "shadow-4.8.1-8.oe1.aarch64.rpm",
          "shadow-debugsource-4.8.1-8.oe1.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.8.1-8.oe1.noarch.rpm"
        ],
        "src": [
          "shadow-4.8.1-8.oe1.src.rpm"
        ],
        "x86_64": [
          "shadow-4.8.1-8.oe1.x86_64.rpm",
          "shadow-debuginfo-4.8.1-8.oe1.x86_64.rpm",
          "shadow-debugsource-4.8.1-8.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP3",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-20.03-LTS-SP3"
      },
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        {
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            },
            {
              "fixed": "4.8.1-8.oe1"
            }
          ],
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        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "shadow-debugsource-4.9-11.oe2203.aarch64.rpm",
          "shadow-subid-devel-4.9-11.oe2203.aarch64.rpm",
          "shadow-debuginfo-4.9-11.oe2203.aarch64.rpm",
          "shadow-4.9-11.oe2203.aarch64.rpm",
          "shadow-4.9-13.oe2203sp1.aarch64.rpm",
          "shadow-subid-devel-4.9-13.oe2203sp1.aarch64.rpm",
          "shadow-debuginfo-4.9-13.oe2203sp1.aarch64.rpm",
          "shadow-debugsource-4.9-13.oe2203sp1.aarch64.rpm",
          "shadow-4.9-13.oe2203sp2.aarch64.rpm",
          "shadow-debugsource-4.9-13.oe2203sp2.aarch64.rpm",
          "shadow-debuginfo-4.9-13.oe2203sp2.aarch64.rpm",
          "shadow-subid-devel-4.9-13.oe2203sp2.aarch64.rpm"
        ],
        "noarch": [
          "shadow-help-4.9-11.oe2203.noarch.rpm",
          "shadow-help-4.9-13.oe2203sp1.noarch.rpm",
          "shadow-help-4.9-13.oe2203sp2.noarch.rpm"
        ],
        "src": [
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          "shadow-4.9-13.oe2203sp1.src.rpm",
          "shadow-4.9-13.oe2203sp2.src.rpm"
        ],
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          "shadow-debuginfo-4.9-11.oe2203.x86_64.rpm",
          "shadow-subid-devel-4.9-11.oe2203.x86_64.rpm",
          "shadow-debugsource-4.9-11.oe2203.x86_64.rpm",
          "shadow-debuginfo-4.9-13.oe2203sp1.x86_64.rpm",
          "shadow-debugsource-4.9-13.oe2203sp1.x86_64.rpm",
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          "shadow-debuginfo-4.9-13.oe2203sp2.x86_64.rpm",
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        "src": [
          "shadow-4.9-13.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "shadow-debuginfo-4.9-13.oe2203sp2.x86_64.rpm",
          "shadow-4.9-13.oe2203sp2.x86_64.rpm",
          "shadow-debugsource-4.9-13.oe2203sp2.x86_64.rpm",
          "shadow-subid-devel-4.9-13.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "shadow",
        "purl": "pkg:rpm/openEuler/shadow\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.9-13.oe2203sp2"
            }
          ],
          "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\nWhen gpasswd(1) asks for the new password, it asks twice (as is usual for confirming the new password).  Each of those 2 password prompts uses agetpass() to get the password.  If the second agetpass() fails, the first password, which has been copied into the \u0026apos;static\u0026apos; buffer \u0026apos;pass\u0026apos; via STRFCPY(), wasn\u0026apos;t being zeroed.(CVE-2023-4641)",
  "id": "OESA-2023-1687",
  "modified": "2026-08-06T11:06:08Z",
  "published": "2023-09-28T11:06:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1687"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4641"
    }
  ],
  "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": "shadow security update",
  "upstream": [
    "CVE-2023-4641"
  ]
}

CVE-2023-4641 (GCVE-0-2023-4641)

Vulnerability from cvelistv5 – Published: 2023-12-27 15:43 – Updated: 2025-11-03 19:28

Title

Shadow-utils: possible password leak during passwd(1) change

Summary

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

Severity

4.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-01-02 18:19 UTC

CWE

CWE-303 - Incorrect Implementation of Authentication Algorithm

Assigner

redhat redhat root

References

7 references

URL	Tags
https://access.redhat.com/errata/RHSA-2023:6632	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7112	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0417	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2577	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-4641	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2215945	issue-trackingx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

7 products

Vendor	Product	Version
		Unaffected: 4.14.0-rc1 , < * (semver)
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 2:4.6-19.el8 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	Unaffected: 2:4.6-17.el8_6 , < * (rpm) cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/a:redhat:rhel_eus:8.6::crb
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	Unaffected: 2:4.6-17.el8_8.2 , < * (rpm) cpe:/o:redhat:rhel_eus:8.8::baseos cpe:/a:redhat:rhel_eus:8.8::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 2:4.9-8.el9 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Date Public

2023-06-17 00:00

Show details on NVD website

JSON

To clipboard

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  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2023-4641",
    "datePublished": "2023-12-27T15:43:22.929Z",
    "dateReserved": "2023-08-30T17:16:27.137Z",
    "dateUpdated": "2025-11-03T19:28:32.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

Action not permitted

OESA-2023-1687 (CVE-2023-4641)

CVE-2023-4641 (GCVE-0-2023-4641)

Tags

Sightings

Nomenclature

Related by attack behaviour