gsd-2023-25815
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function's implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\mingw64\share\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\` (and since `C:\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1. This vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It does require local write access by the attacker, though, which makes this attack vector less likely. Version 2.40.1 contains a patch for this issue. Some workarounds are available. Do not work on a Windows machine with shared accounts, or alternatively create a `C:\mingw64` folder and leave it empty. Users who have administrative rights may remove the permission to create folders in `C:\`.
Aliases
Aliases
CVE-2023-25815


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-25815",
    "id": "GSD-2023-25815"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-25815"
      ],
      "details": "In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function\u0027s implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\\mingw64\\share\\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\\` (and since `C:\\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1.\n\nThis vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It does require local write access by the attacker, though, which makes this attack vector less likely. Version 2.40.1 contains a patch for this issue. Some workarounds are available. Do not work on a Windows machine with shared accounts, or alternatively create a `C:\\mingw64` folder and leave it empty. Users who have administrative rights may remove the permission to create folders in `C:\\`.",
      "id": "GSD-2023-25815",
      "modified": "2023-12-13T01:20:40.806585Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-25815",
        "STATE": "PUBLIC"
      },
      "affects": {
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            {
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                  {
                    "product_name": "git",
                    "version": {
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                        {
                          "version_affected": "=",
                          "version_value": "\u003c 2.40.1"
                        }
                      ]
                    }
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                ]
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      "description": {
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            "value": "In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function\u0027s implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\\mingw64\\share\\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\\` (and since `C:\\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1.\n\nThis vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It does require local write access by the attacker, though, which makes this attack vector less likely. Version 2.40.1 contains a patch for this issue. Some workarounds are available. Do not work on a Windows machine with shared accounts, or alternatively create a `C:\\mingw64` folder and leave it empty. Users who have administrative rights may remove the permission to create folders in `C:\\`."
          }
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            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:L",
            "version": "3.1"
          }
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                "lang": "eng",
                "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
              }
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              }
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            "name": "https://github.com/git-for-windows/git/security/advisories/GHSA-9w66-8mq8-5vm8",
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            "refsource": "MISC",
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          },
          {
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            "refsource": "MISC",
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          },
          {
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      },
      "source": {
        "advisory": "GHSA-9w66-8mq8-5vm8",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "cve": {
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        "descriptions": [
          {
            "lang": "en",
            "value": "In Git for Windows, the Windows port of Git, no localized messages are shipped with the installer. As a consequence, Git is expected not to localize messages at all, and skips the gettext initialization. However, due to a change in MINGW-packages, the `gettext()` function\u0027s implicit initialization no longer uses the runtime prefix but uses the hard-coded path `C:\\mingw64\\share\\locale` to look for localized messages. And since any authenticated user has the permission to create folders in `C:\\` (and since `C:\\mingw64` does not typically exist), it is possible for low-privilege users to place fake messages in that location where `git.exe` will pick them up in version 2.40.1.\n\nThis vulnerability is relatively hard to exploit and requires social engineering. For example, a legitimate message at the end of a clone could be maliciously modified to ask the user to direct their web browser to a malicious website, and the user might think that the message comes from Git and is legitimate. It does require local write access by the attacker, though, which makes this attack vector less likely. Version 2.40.1 contains a patch for this issue. Some workarounds are available. Do not work on a Windows machine with shared accounts, or alternatively create a `C:\\mingw64` folder and leave it empty. Users who have administrative rights may remove the permission to create folders in `C:\\`."
          }
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        "lastModified": "2023-12-27T10:15:38.557",
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        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
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    }
  }
}


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