Vulnerability-Lookup

OESA-2021-1345 (CVE-2021-40330)

Vulnerability from osv_openeuler – Published: 2021-09-18 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

git security update

Details

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.

Security Fix(es):

git_connect_git in connect.c in Git before 2.30.1 allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring.(CVE-2021-40330)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-40330	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "git-2.27.0-5.oe1.aarch64.rpm",
          "git-debuginfo-2.27.0-5.oe1.aarch64.rpm",
          "git-daemon-2.27.0-5.oe1.aarch64.rpm",
          "git-debugsource-2.27.0-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "git-svn-2.27.0-5.oe1.noarch.rpm",
          "git-gui-2.27.0-5.oe1.noarch.rpm",
          "git-web-2.27.0-5.oe1.noarch.rpm",
          "gitk-2.27.0-5.oe1.noarch.rpm",
          "git-help-2.27.0-5.oe1.noarch.rpm",
          "git-email-2.27.0-5.oe1.noarch.rpm",
          "perl-Git-2.27.0-5.oe1.noarch.rpm",
          "perl-Git-SVN-2.27.0-5.oe1.noarch.rpm"
        ],
        "src": [
          "git-2.27.0-5.oe1.src.rpm"
        ],
        "x86_64": [
          "git-debugsource-2.27.0-5.oe1.x86_64.rpm",
          "git-daemon-2.27.0-5.oe1.x86_64.rpm",
          "git-2.27.0-5.oe1.x86_64.rpm",
          "git-debuginfo-2.27.0-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "git",
        "purl": "pkg:rpm/openEuler/git\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.27.0-5.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "git-2.27.0-5.oe1.aarch64.rpm",
          "git-debuginfo-2.27.0-5.oe1.aarch64.rpm",
          "git-daemon-2.27.0-5.oe1.aarch64.rpm",
          "git-debugsource-2.27.0-5.oe1.aarch64.rpm"
        ],
        "noarch": [
          "git-email-2.27.0-5.oe1.noarch.rpm",
          "git-web-2.27.0-5.oe1.noarch.rpm",
          "git-gui-2.27.0-5.oe1.noarch.rpm",
          "git-help-2.27.0-5.oe1.noarch.rpm",
          "perl-Git-2.27.0-5.oe1.noarch.rpm",
          "git-svn-2.27.0-5.oe1.noarch.rpm",
          "gitk-2.27.0-5.oe1.noarch.rpm",
          "perl-Git-SVN-2.27.0-5.oe1.noarch.rpm"
        ],
        "src": [
          "git-2.27.0-5.oe1.src.rpm"
        ],
        "x86_64": [
          "git-debuginfo-2.27.0-5.oe1.x86_64.rpm",
          "git-daemon-2.27.0-5.oe1.x86_64.rpm",
          "git-2.27.0-5.oe1.x86_64.rpm",
          "git-debugsource-2.27.0-5.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "git",
        "purl": "pkg:rpm/openEuler/git\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.27.0-5.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.\n\nGit is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.\r\n\r\nSecurity Fix(es):\r\n\r\ngit_connect_git in connect.c in Git before 2.30.1 allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring.(CVE-2021-40330)",
  "id": "OESA-2021-1345",
  "modified": "2026-08-06T11:04:37Z",
  "published": "2021-09-18T11:04:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1345"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40330"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "git security update",
  "upstream": [
    "CVE-2021-40330"
  ]
}

CVE-2021-40330 (GCVE-0-2021-40330)

Vulnerability from cvelistv5 – Published: 2021-08-31 00:00 – Updated: 2024-08-04 02:27

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/git/git/commit/a02ea577174ab8e…
https://github.com/git/git/compare/v2.30.0...v2.30.1
https://lists.debian.org/debian-lts-announce/2022…	mailing-list

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:27:31.913Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/git/git/commit/a02ea577174ab8ed18f847cf1693f213e0b9c473"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/git/git/compare/v2.30.0...v2.30.1"
          },
          {
            "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3145-1] git security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "git_connect_git in connect.c in Git before 2.30.1 allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-11T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/git/git/commit/a02ea577174ab8ed18f847cf1693f213e0b9c473"
        },
        {
          "url": "https://github.com/git/git/compare/v2.30.0...v2.30.1"
        },
        {
          "name": "[debian-lts-announce] 20221010 [SECURITY] [DLA 3145-1] git security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00014.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-40330",
    "datePublished": "2021-08-31T00:00:00.000Z",
    "dateReserved": "2021-08-31T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:27:31.913Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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.