BREW-GIT-CVE-2018-17456 (CVE-2018-17456)

Vulnerability from osv_homebrew – Published: 2026-10-15 03:31 – Updated: 2026-10-15 03:31 – Source website
VLAI
Details

Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive "git clone" of a superproject if a .gitmodules file has a URL field beginning with a '-' character.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "upstream_fixed_in": "2.19.1"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "git",
        "purl": "pkg:brew/git"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.6.3.1"
            },
            {
              "fixed": "2.19.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "git",
    "upstream_evidence": [
      {
        "ecosystem": "GIT",
        "key": "https://github.com/git/git",
        "name": "https://github.com/git/git",
        "strategy": "git",
        "subject_version": "2.56.0"
      },
      {
        "ecosystem": "Debian",
        "key": "Debian/git",
        "name": "git",
        "strategy": "distro"
      },
      {
        "ecosystem": "GIT",
        "key": "upstream:https://github.com/git/git",
        "name": "https://github.com/git/git",
        "strategy": "distro",
        "subject_version": "2.56.0"
      },
      {
        "ecosystem": "Ubuntu",
        "key": "Ubuntu/git",
        "name": "git",
        "strategy": "distro"
      }
    ]
  },
  "details": "Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive \"git clone\" of a superproject if a .gitmodules file has a URL field beginning with a \u0027-\u0027 character.",
  "id": "BREW-git-CVE-2018-17456",
  "modified": "2026-10-15T03:31:21Z",
  "published": "2026-10-15T03:31:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00003.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://packetstormsecurity.com/files/152173/Sourcetree-Git-Arbitrary-Code-Execution-URL-Handling.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/bid/105523"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/bid/107511"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securitytracker.com/id/1041811"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2018:3408"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2018:3505"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2018:3541"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2020:0316"
    },
    {
      "type": "ADVISORY",
      "url": "https://marc.info/?l=git\u0026m=153875888916397\u0026w=2"
    },
    {
      "type": "ADVISORY",
      "url": "https://seclists.org/bugtraq/2019/Mar/30"
    },
    {
      "type": "ADVISORY",
      "url": "https://usn.ubuntu.com/3791-1/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2018/dsa-4311"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.openwall.com/lists/oss-security/2018/10/06/3"
    },
    {
      "type": "FIX",
      "url": "https://github.com/git/git/commit/1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404"
    },
    {
      "type": "FIX",
      "url": "https://github.com/git/git/commit/a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.exploit-db.com/exploits/45548/"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.exploit-db.com/exploits/45631/"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2018-17456"
  ]
}



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