github - ghsa-3p86-9955-h393

GHSA-3P86-9955-H393

Vulnerability from github – Published: 2023-09-18 15:30 – Updated: 2024-04-11 19:37

Summary

Arbitrary File Overwrite in Eclipse JGit

Details

Arbitrary File Overwrite in Eclipse JGit <= 6.6.0

In Eclipse JGit, all versions <= 6.6.0.202305301015-r, a symbolic link present in a specially crafted git repository can be used to write a file to locations outside the working tree when this repository is cloned with JGit to a case-insensitive filesystem, or when a checkout from a clone of such a repository is performed on a case-insensitive filesystem.

This can happen on checkout (DirCacheCheckout), merge (ResolveMerger via its WorkingTreeUpdater), pull (PullCommand using merge), and when applying a patch (PatchApplier). This can be exploited for remote code execution (RCE), for instance if the file written outside the working tree is a git filter that gets executed on a subsequent git command.

The issue occurs only on case-insensitive filesystems, like the default filesystems on Windows and macOS. The user performing the clone or checkout must have the rights to create symbolic links for the problem to occur, and symbolic links must be enabled in the git configuration.

Setting git configuration option core.symlinks = false before checking out avoids the problem.

The issue was fixed in Eclipse JGit version 6.6.1.202309021850-r and 6.7.0.202309050840-r, available via Maven Central https://repo1.maven.org/maven2/org/eclipse/jgit/ and repo.eclipse.org https://repo.eclipse.org/content/repositories/jgit-releases/ . A backport is available in 5.13.3 starting from 5.13.3.202401111512-r.

The JGit maintainers would like to thank RyotaK for finding and reporting this issue.

Severity ?

8.8 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.6.0.202305301015-r"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.eclipse.jgit:org.eclipse.jgit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0.202111291000-r"
            },
            {
              "fixed": "6.6.1.202309021850-r"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.eclipse.jgit:org.eclipse.jgit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.13.3.202401111512-r"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-4759"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-09-18T19:17:54Z",
    "nvd_published_at": "2023-09-12T10:15:29Z",
    "severity": "HIGH"
  },
  "details": "Arbitrary File Overwrite in Eclipse JGit \u003c= 6.6.0\n\nIn Eclipse JGit, all versions \u003c= 6.6.0.202305301015-r, a symbolic link present in a specially crafted git repository can be used to write a file to locations outside the working tree when this repository is cloned with JGit to a case-insensitive filesystem, or when a checkout from a clone of such a repository is performed on a case-insensitive filesystem.\n\nThis can happen on checkout (DirCacheCheckout), merge (ResolveMerger\u00a0via its WorkingTreeUpdater), pull (PullCommand\u00a0using merge), and when applying a patch (PatchApplier). This can be exploited for remote code execution (RCE), for instance if the file written outside the working tree is a git filter that gets executed on a subsequent git command.\n\nThe issue occurs only on case-insensitive filesystems, like the default filesystems on Windows and macOS. The user performing the clone or checkout must have the rights to create symbolic links for the problem to occur, and symbolic links must be enabled in the git configuration.\n\nSetting git configuration option core.symlinks = false\u00a0before checking out avoids the problem.\n\nThe issue was fixed in Eclipse JGit version 6.6.1.202309021850-r and 6.7.0.202309050840-r, available via  Maven Central https://repo1.maven.org/maven2/org/eclipse/jgit/ \u00a0and  repo.eclipse.org https://repo.eclipse.org/content/repositories/jgit-releases/ . A backport is available in 5.13.3 starting from 5.13.3.202401111512-r.\n\nThe JGit maintainers would like to thank RyotaK for finding and reporting this issue.\n\n\n\n",
  "id": "GHSA-3p86-9955-h393",
  "modified": "2024-04-11T19:37:35Z",
  "published": "2023-09-18T15:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4759"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eclipse-jgit/jgit/issues/30"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.eclipse.org/c/jgit/jgit.git"
    },
    {
      "type": "WEB",
      "url": "https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11"
    },
    {
      "type": "WEB",
      "url": "https://projects.eclipse.org/projects/technology.jgit/releases/5.13.3"
    },
    {
      "type": "WEB",
      "url": "https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Arbitrary File Overwrite in Eclipse JGit "
}

CVE-2023-4759 (GCVE-0-2023-4759)

Vulnerability from cvelistv5 – Published: 2023-09-12 09:12 – Updated: 2024-08-02 07:37

Summary

Arbitrary File Overwrite in Eclipse JGit <= 6.6.0 In Eclipse JGit, all versions <= 6.6.0.202305301015-r, a symbolic link present in a specially crafted git repository can be used to write a file to locations outside the working tree when this repository is cloned with JGit to a case-insensitive filesystem, or when a checkout from a clone of such a repository is performed on a case-insensitive filesystem. This can happen on checkout (DirCacheCheckout), merge (ResolveMerger via its WorkingTreeUpdater), pull (PullCommand using merge), and when applying a patch (PatchApplier). This can be exploited for remote code execution (RCE), for instance if the file written outside the working tree is a git filter that gets executed on a subsequent git command. The issue occurs only on case-insensitive filesystems, like the default filesystems on Windows and macOS. The user performing the clone or checkout must have the rights to create symbolic links for the problem to occur, and symbolic links must be enabled in the git configuration. Setting git configuration option core.symlinks = false before checking out avoids the problem. The issue was fixed in Eclipse JGit version 6.6.1.202309021850-r and 6.7.0.202309050840-r, available via Maven Central https://repo1.maven.org/maven2/org/eclipse/jgit/ and repo.eclipse.org https://repo.eclipse.org/content/repositories/jgit-releases/ . A backport is available in 5.13.3 starting from 5.13.3.202401111512-r. The JGit maintainers would like to thank RyotaK for finding and reporting this issue.

Severity ?

8.8 (High)


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

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')
CWE-178 - Improper Handling of Case Sensitivity

Assigner

eclipse

References

URL

Tags

	https://gitlab.eclipse.org/security/vulnerability…
	https://projects.eclipse.org/projects/technology.…
	https://git.eclipse.org/c/jgit/jgit.git/commit/?i…

Impacted products

	Vendor	Product	Version
	Eclipse Foundation	Eclipse JGit	Affected: 0.0.0 , ≤ 6.6.0.202305301015-r (semver) Unaffected: 5.13.3.202401111512-r

Credits

RyotaK

Show details on NVD website

JSON

To clipboard

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        ],
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          "dateUpdated": "2024-07-19T13:51:38.023Z",
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          "shortName": "CISA-ADP"
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Sightings

Author	Source	Type	Date

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

GHSA-3P86-9955-H393

CVE-2023-4759 (GCVE-0-2023-4759)

Tags

Sightings

Nomenclature