Vulnerability-Lookup

CVE-2021-3429 (GCVE-0-2021-3429)

Vulnerability from cvelistv5 – Published: 2023-04-19 21:42 – Updated: 2025-02-05 14:44

Title

sensitive data exposure in cloud-init logs

Summary

When instructing cloud-init to set a random password for a new user account, versions before 21.2 would write that password to the world-readable log file /var/log/cloud-init-output.log. This could allow a local user to log in as another user.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-532
CWE-532 - Insertion of Sensitive Information into Log File

Assigner

canonical

References

1 reference

URL	Tags
https://github.com/canonical/cloud-init/commit/b7…	patch

Impacted products

1 product

Vendor	Product	Version
Canonical Ltd.	cloud-init	Affected: 0 , < 21.2 (semver)

Date Public

2021-03-26 00:00

Credits

Carl Pearson

Show details on NVD website

JSON

To clipboard

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WID-SEC-W-2025-0214

Vulnerability from csaf_certbund - Published: 2021-08-10 22:00 - Updated: 2025-01-29 23:00

Summary

Red Hat Enterprise Linux (cloud-init): Schwachstelle ermöglicht Offenlegung von Informationen

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution.

Angriff: Ein lokaler Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux in der Komponente "cloud-init" ausnutzen, um Informationen offenzulegen.

Betroffene Betriebssysteme: - Linux - UNIX

CVE-2021-3429

Es existiert eine Schwachstelle in Red Hat Enterprise Linux. Der Fehler besteht in der Komponente cloud-init aufgrund eines im Klartext geschriebenen Passworts, wenn das Modul "Set Passwords" mit der Direktive "chpasswd" und "RANDOM" verwendet wird. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um vertrauliche Informationen offenzulegen und sich möglicherweise als ein anderer Benutzer anzumelden.

Affected products

Known affected 3 products

Product	Identifier	Version
Dell NetWorker Dell	`cpe:/a:dell:networker:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
Red Hat Enterprise Linux 8 Red Hat / Enterprise Linux	`cpe:/o:redhat:enterprise_linux:8`	8

References

7 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://access.redhat.com/errata/RHSA-2021:3081	external
https://linux.oracle.com/errata/ELSA-2021-3081.html	external
https://access.redhat.com/errata/RHSA-2021:3177	external
https://access.redhat.com/errata/RHSA-2021:3371	external
https://www.dell.com/support/kbdoc/de-de/00027881…	external

JSON

To clipboard

{
  "document": {
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      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
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      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
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        "category": "description",
        "text": "Red Hat Enterprise Linux (RHEL) ist eine popul\u00e4re Linux-Distribution.",
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      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux in der Komponente \"cloud-init\" ausnutzen, um Informationen offenzulegen.",
        "title": "Angriff"
      },
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        "category": "general",
        "text": "- Linux\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
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      {
        "category": "external",
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        "url": "https://access.redhat.com/errata/RHSA-2021:3371"
      },
      {
        "category": "external",
        "summary": "Dell Security Advisory DSA-2025-064 vom 2025-01-30",
        "url": "https://www.dell.com/support/kbdoc/de-de/000278811/dsa-2025-064-security-update-for-dell-networker-networker-virtual-edition-and-networker-management-console-multiple-component-vulnerabilities"
      }
    ],
    "source_lang": "en-US",
    "title": "Red Hat Enterprise Linux (cloud-init): Schwachstelle erm\u00f6glicht Offenlegung von Informationen",
    "tracking": {
      "current_release_date": "2025-01-29T23:00:00.000+00:00",
      "generator": {
        "date": "2025-01-30T10:27:36.442+00:00",
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      "revision_history": [
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          "date": "2021-08-10T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2021-08-11T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
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        {
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          "number": "3",
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          "number": "4",
          "summary": "Neue Updates von Red Hat aufgenommen"
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          "date": "2025-01-29T23:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Dell aufgenommen"
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      "status": "final",
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    }
  ]
}

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.

Action not permitted

CVE-2021-3429 (GCVE-0-2021-3429)

WID-SEC-W-2025-0214

Tags

Sightings

Nomenclature