Vulnerability-Lookup

ubuntu-cve-2022-20001

Vulnerability from osv_ubuntu

Published

2022-03-14 19:15

Modified

2025-10-24 04:53

Summary

Details

fish is a command line shell. fish version 3.1.0 through version 3.3.1 is vulnerable to arbitrary code execution. git repositories can contain per-repository configuration that change the behavior of git, including running arbitrary commands. When using the default configuration of fish, changing to a directory automatically runs git commands in order to display information about the current repository in the prompt. If an attacker can convince a user to change their current directory into one controlled by the attacker, such as on a shared file system or extracted archive, fish will run arbitrary commands under the attacker's control. This problem has been fixed in fish 3.4.0. Note that running git in these directories, including using the git tab completion, remains a potential trigger for this issue. As a workaround, remove the fish_git_prompt function from the prompt.

Severity

7.8 (High)


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

7.8 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2022-20001	REPORT
	https://github.com/fish-shell/fish-shell/security…	REPORT
	https://github.com/fish-shell/fish-shell/pull/8589	REPORT
	https://github.com/fish-shell/fish-shell/commit/3…	REPORT
	https://github.com/fish-shell/fish-shell/releases…	REPORT
	https://ubuntu.com/security/notices/USN-5367-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2022-20001	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fish",
            "binary_version": "3.1.0-1.2ubuntu0.1~esm1"
          },
          {
            "binary_name": "fish-common",
            "binary_version": "3.1.0-1.2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "fish",
        "purl": "pkg:deb/ubuntu/fish@3.1.0-1.2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.0-1.2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.2-2",
        "3.1.0-1",
        "3.1.0-1.1",
        "3.1.0-1.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fish",
            "binary_version": "3.3.1+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "fish-common",
            "binary_version": "3.3.1+ds-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "fish",
        "purl": "pkg:deb/ubuntu/fish@3.3.1+ds-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1+ds-3ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2-3ubuntu1",
        "3.3.1+ds-2",
        "3.3.1+ds-3"
      ]
    }
  ],
  "aliases": [],
  "details": "fish is a command line shell. fish version 3.1.0 through version 3.3.1 is vulnerable to arbitrary code execution. git repositories can contain per-repository configuration that change the behavior of git, including running arbitrary commands. When using the default configuration of fish, changing to a directory automatically runs `git` commands in order to display information about the current repository in the prompt. If an attacker can convince a user to change their current directory into one controlled by the attacker, such as on a shared file system or extracted archive, fish will run arbitrary commands under the attacker\u0027s control. This problem has been fixed in fish 3.4.0. Note that running git in these directories, including using the git tab completion, remains a potential trigger for this issue. As a workaround, remove the `fish_git_prompt` function from the prompt.",
  "id": "UBUNTU-CVE-2022-20001",
  "modified": "2025-10-24T04:53:19Z",
  "published": "2022-03-14T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-20001"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fish-shell/fish-shell/pull/8589"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fish-shell/fish-shell/commit/37625053d424c1ab88de2b0c50c7fe71e1468e2c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/fish-shell/fish-shell/releases/tag/3.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5367-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-20001"
    }
  ],
  "related": [
    "USN-5367-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2022-20001"
  ]
}

CVE-2022-20001 (GCVE-0-2022-20001)

Vulnerability from cvelistv5 – Published: 2022-03-14 00:00 – Updated: 2025-04-23 18:54

Title

Injection in fish

Summary

fish is a command line shell. fish version 3.1.0 through version 3.3.1 is vulnerable to arbitrary code execution. git repositories can contain per-repository configuration that change the behavior of git, including running arbitrary commands. When using the default configuration of fish, changing to a directory automatically runs `git` commands in order to display information about the current repository in the prompt. If an attacker can convince a user to change their current directory into one controlled by the attacker, such as on a shared file system or extracted archive, fish will run arbitrary commands under the attacker's control. This problem has been fixed in fish 3.4.0. Note that running git in these directories, including using the git tab completion, remains a potential trigger for this issue. As a workaround, remove the `fish_git_prompt` function from the prompt.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Assigner

GitHub_M

References

7 references

URL	Tags
https://github.com/fish-shell/fish-shell/security…
https://github.com/fish-shell/fish-shell/pull/8589
https://github.com/fish-shell/fish-shell/releases…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.debian.org/security/2022/dsa-5234	vendor-advisory
https://security.gentoo.org/glsa/202309-10	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
fish-shell	fish-shell	Affected: >= 3.1.0, < 3.4.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T01:55:46.184Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq"
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          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/fish-shell/fish-shell/pull/8589"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/fish-shell/fish-shell/releases/tag/3.4.0"
          },
          {
            "name": "FEDORA-2022-443c5ec2dd",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRNMYS2LKB6TKOOBQQRSRQICDMWLZ4QL/"
          },
          {
            "name": "FEDORA-2022-cd2c5e0634",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPZ7JV22DSZB5LNUCUEJ2HO3PKM2TVVK/"
          },
          {
            "name": "DSA-5234",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5234"
          },
          {
            "name": "GLSA-202309-10",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202309-10"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-20001",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T15:55:08.869505Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T18:54:25.700Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "fish-shell",
          "vendor": "fish-shell",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.1.0, \u003c 3.4.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "fish is a command line shell. fish version 3.1.0 through version 3.3.1 is vulnerable to arbitrary code execution. git repositories can contain per-repository configuration that change the behavior of git, including running arbitrary commands. When using the default configuration of fish, changing to a directory automatically runs `git` commands in order to display information about the current repository in the prompt. If an attacker can convince a user to change their current directory into one controlled by the attacker, such as on a shared file system or extracted archive, fish will run arbitrary commands under the attacker\u0027s control. This problem has been fixed in fish 3.4.0. Note that running git in these directories, including using the git tab completion, remains a potential trigger for this issue. As a workaround, remove the `fish_git_prompt` function from the prompt."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-74",
              "description": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-09-29T12:06:17.276Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "url": "https://github.com/fish-shell/fish-shell/security/advisories/GHSA-pj5f-6vxj-f5mq"
        },
        {
          "url": "https://github.com/fish-shell/fish-shell/pull/8589"
        },
        {
          "url": "https://github.com/fish-shell/fish-shell/releases/tag/3.4.0"
        },
        {
          "name": "FEDORA-2022-443c5ec2dd",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRNMYS2LKB6TKOOBQQRSRQICDMWLZ4QL/"
        },
        {
          "name": "FEDORA-2022-cd2c5e0634",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPZ7JV22DSZB5LNUCUEJ2HO3PKM2TVVK/"
        },
        {
          "name": "DSA-5234",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5234"
        },
        {
          "name": "GLSA-202309-10",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202309-10"
        }
      ],
      "source": {
        "advisory": "GHSA-pj5f-6vxj-f5mq",
        "discovery": "UNKNOWN"
      },
      "title": "Injection in fish"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-20001",
    "datePublished": "2022-03-14T00:00:00.000Z",
    "dateReserved": "2021-06-08T00:00:00.000Z",
    "dateUpdated": "2025-04-23T18:54:25.700Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

usn-5367-1

Vulnerability from osv_ubuntu

Published

2022-08-10 18:31

Modified

2026-04-27 14:11

Summary

fish vulnerability

Details

Justin Steven discovered that fish was not properly filtering local git configuration directives when running background git commands. A remote unauthenticated attacker could possibly use this issue to execute arbitrary code.

References

URL

Type

	https://ubuntu.com/security/notices/USN-5367-1	ADVISORY
	https://ubuntu.com/security/CVE-2022-20001	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-20001",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fish",
            "binary_version": "3.1.0-1.2ubuntu0.1~esm1"
          },
          {
            "binary_name": "fish-common",
            "binary_version": "3.1.0-1.2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "fish",
        "purl": "pkg:deb/ubuntu/fish@3.1.0-1.2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.0-1.2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.2-2",
        "3.1.0-1",
        "3.1.0-1.1",
        "3.1.0-1.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-20001",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "fish",
            "binary_version": "3.3.1+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "fish-common",
            "binary_version": "3.3.1+ds-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "fish",
        "purl": "pkg:deb/ubuntu/fish@3.3.1+ds-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.3.1+ds-3ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2-3ubuntu1",
        "3.3.1+ds-2",
        "3.3.1+ds-3"
      ]
    }
  ],
  "aliases": [],
  "details": "Justin Steven discovered that fish was not properly filtering local\ngit configuration directives when running background git commands.\nA remote unauthenticated attacker could possibly use this issue to\nexecute arbitrary code.\n",
  "id": "USN-5367-1",
  "modified": "2026-04-27T14:11:28Z",
  "published": "2022-08-10T18:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5367-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-20001"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "fish vulnerability",
  "upstream": [
    "UBUNTU-CVE-2022-20001"
  ]
}

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.

Action not permitted

ubuntu-cve-2022-20001

Vulnerability from osv_ubuntu

CVE-2022-20001 (GCVE-0-2022-20001)

usn-5367-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature