github - ghsa-cx3w-xqmc-84g5

ghsa-cx3w-xqmc-84g5

Vulnerability from github

Published

2022-02-15 00:30

Modified

2022-04-20 16:24

Severity ?

7.2 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Summary

Git LFS can execute a Git binary from the current directory on Windows

Details

Impact

On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems.

This is the result of an incomplete fix for CVE-2020-27955.

This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator.

Patches

This version should be patched in v2.13.2, which will be released in coordination with this security advisory.

Workarounds

Other than avoiding untrusted repositories or using a different operating system, there is no workaround.

References

Are there any links users can visit to find out more?

For more information

If you have any questions or comments about this advisory:

Start a discussion in the Git LFS discussion page.
If you cannot open a discussion, please email the core team using their usernames at github.com.

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/git-lfs/git-lfs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.13.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21237"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-426",
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-21T17:37:52Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nOn Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems.\n\nThis is the result of an incomplete fix for CVE-2020-27955.\n\nThis issue occurs because on Windows, [Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator](https://github.com/golang/go/issues/38736).\n\n### Patches\nThis version should be patched in v2.13.2, which will be released in coordination with this security advisory.\n\n### Workarounds\nOther than avoiding untrusted repositories or using a different operating system, there is no workaround.\n\n### References\n_Are there any links users can visit to find out more?_\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Start a discussion in [the Git LFS discussion page](https://github.com/git-lfs/git-lfs/discussions).\n- If you cannot open a discussion, please email the core team using their usernames at `github.com`.",
  "id": "GHSA-cx3w-xqmc-84g5",
  "modified": "2022-04-20T16:24:41Z",
  "published": "2022-02-15T00:30:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21237"
    },
    {
      "type": "WEB",
      "url": "https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a"
    },
    {
      "type": "WEB",
      "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/git-lfs/git-lfs"
    },
    {
      "type": "WEB",
      "url": "https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2021-0098"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Git LFS can execute a Git binary from the current directory on Windows"
}

cve-2021-21237

Vulnerability from cvelistv5

Published

2021-01-15 17:36

Modified

2024-08-03 18:09

Severity ?

7.2 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

Summary

Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2.

References

▼	URL	Tags
	https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5	x_refsource_CONFIRM
	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955	x_refsource_MISC
	https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2	x_refsource_MISC
	https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	git-lfs	git-lfs	Version: < 2.13.2

Show details on NVD website

JSON

To clipboard

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        "affects": {
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

ghsa-cx3w-xqmc-84g5

Vulnerability from github

Impact

Patches

Workarounds

References

For more information

cve-2021-21237

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature