Vulnerability-Lookup

CVE-2021-42382 (GCVE-0-2021-42382)

Vulnerability from cvelistv5 – Published: 2021-11-15 00:00 – Updated: 2025-11-03 20:34

Summary

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_s function

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:32 UTC

CWE

CWE-416

Assigner

JFROG mitre root

References

6 references

URL	Tags
https://jfrog.com/blog/unboxing-busybox-14-new-vu…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2021122…
https://claroty.com/team82/research/unboxing-busy…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version	CPE status
busybox	busybox	Affected: unspecified , < 1.34.0 (custom)	guessed

Show details on NVD website

JSON

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}

SUSE-SU-2022:0135-2

Vulnerability from csaf_suse - Published: 2022-02-14 10:50 - Updated: 2022-02-14 10:50

Summary

Security update for busybox

Severity

Important

Scope

27 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

6.6 (Medium)


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

Recommended: 2 products

Open the full advisory

SUSE-SU-2022:3959-1

Vulnerability from csaf_suse - Published: 2022-11-11 14:38 - Updated: 2022-11-11 14:38

Summary

Security update for busybox

Severity

Important

Scope

27 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

6.6 (Medium)


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

Recommended: 22 products

Open the full advisory

SUSE-SU-2022:4253-1

Vulnerability from csaf_suse - Published: 2022-11-28 10:23 - Updated: 2022-11-28 10:23

Summary

Security update for busybox

Severity

Important

Scope

28 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

6.6 (Medium)


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

Recommended: 18 products

Open the full advisory

ubuntu-cve-2021-42382

Vulnerability from osv_ubuntu

Published

2021-11-15 21:15

Modified

2025-09-08 16:47

Summary

Details

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_s function

Severity

7.2 (High)


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

7.2 (High)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2021-42382	REPORT
	https://jfrog.com/blog/unboxing-busybox-14-new-vu…	REPORT
	https://ubuntu.com/security/notices/USN-5179-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-42382	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.21.0-1ubuntu1.4+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.20.0-8.1ubuntu1",
        "1:1.20.0-9ubuntu1",
        "1:1.20.0-9ubuntu2",
        "1:1.21.0-1ubuntu1",
        "1:1.21.0-1ubuntu1.4",
        "1:1.21.0-1ubuntu1.4+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
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          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
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          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.22.0-15ubuntu1.4+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.22.0-15ubuntu1",
        "1:1.22.0-15ubuntu1.4",
        "1:1.22.0-15ubuntu1.4+esm1",
        "1:1.22.0-15ubuntu1.4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.27.2-2ubuntu3.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.27.2-2ubuntu3.4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:1.27.2-2ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.22.0-19ubuntu2",
        "1:1.27.2-1ubuntu3",
        "1:1.27.2-1ubuntu4",
        "1:1.27.2-2ubuntu2",
        "1:1.27.2-2ubuntu3",
        "1:1.27.2-2ubuntu3.1",
        "1:1.27.2-2ubuntu3.2",
        "1:1.27.2-2ubuntu3.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.30.1-4ubuntu6.4"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.30.1-4ubuntu6.4"
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      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.30.1-4ubuntu6.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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            {
              "fixed": "1:1.30.1-4ubuntu6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.30.1-4ubuntu4",
        "1:1.30.1-4ubuntu5",
        "1:1.30.1-4ubuntu6",
        "1:1.30.1-4ubuntu6.1",
        "1:1.30.1-4ubuntu6.2",
        "1:1.30.1-4ubuntu6.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "busybox",
            "binary_version": "1:1.30.1-7ubuntu2"
          },
          {
            "binary_name": "busybox-initramfs",
            "binary_version": "1:1.30.1-7ubuntu2"
          },
          {
            "binary_name": "busybox-static",
            "binary_version": "1:1.30.1-7ubuntu2"
          },
          {
            "binary_name": "busybox-syslogd",
            "binary_version": "1:1.30.1-7ubuntu2"
          },
          {
            "binary_name": "udhcpc",
            "binary_version": "1:1.30.1-7ubuntu2"
          },
          {
            "binary_name": "udhcpd",
            "binary_version": "1:1.30.1-7ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "busybox",
        "purl": "pkg:deb/ubuntu/busybox@1:1.30.1-7ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:1.30.1-7ubuntu2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:1.30.1-6ubuntu3",
        "1:1.30.1-7ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "A use-after-free in Busybox\u0027s awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_s function",
  "id": "UBUNTU-CVE-2021-42382",
  "modified": "2025-09-08T16:47:23Z",
  "published": "2021-11-15T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42382"
    },
    {
      "type": "REPORT",
      "url": "https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5179-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-42382"
    }
  ],
  "related": [
    "USN-5179-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-42382"
  ]
}

VDE-2022-010

Vulnerability from csaf_phoenixcontactgmbhcokg - Published: 2022-04-12 06:00 - Updated: 2025-05-22 13:03

Summary

PHOENIX CONTACT: Multiple Linux component vulnerabilities fixed in latest AXC F x152 LTS release

Scope

60 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_s function

7.2 (High)


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

Known affected: 4 products Fixed: 4 products

Open the full advisory

WID-SEC-W-2022-2028

Vulnerability from csaf_certbund - Published: 2021-11-09 23:00 - Updated: 2026-03-11 23:00

Summary

BusyBox: Mehrere Schwachstellen

Severity

Hoch

Scope

14 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

Known affected: 6 products

Open the full advisory

WID-SEC-W-2023-1432

Vulnerability from csaf_certbund - Published: 2023-06-12 22:00 - Updated: 2023-06-22 22:00

Summary

Siemens SIMATIC S7: Mehrere Schwachstellen

Severity

Kritisch

Scope

149 vulnerabilities in this advisory, including CVE-2021-42382.

CVE-2021-42382

In Siemens SIMATIC S7 existieren mehrere Schwachstellen. Die Fehler bestehen unter anderem aufgrund von unzulässigen Einschränkungen, Pufferüberläufen, fehlenden Freigaben und use-after-free-Problemen. Ein Angreifer kann diese Schwachstellen ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen, seine Privilegien zu erweitern und Daten zu manipulieren. Die erfolgreiche Ausnutzung einiger dieser Schwachstellen erfordert eine Benutzerinteraktion oder erhöhte Privilegien.

Known affected: 2 products

Open the full advisory

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.

Action not permitted

CVE-2021-42382 (GCVE-0-2021-42382)

SUSE-SU-2022:0135-2

SUSE-SU-2022:3959-1

SUSE-SU-2022:4253-1

ubuntu-cve-2021-42382

Vulnerability from osv_ubuntu

VDE-2022-010

WID-SEC-W-2022-2028

WID-SEC-W-2023-1432

Tags

Sightings

Nomenclature