CVE-2021-32804

Katalog CVE

CVSS 8.1 · High EPSS 15,1%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada tar project tar, oracle graalvm +1 lainnya. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

The npm package "tar" (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overwrite vulnerability due to insufficient absolute path sanitization. node-tar aims to prevent extraction of absolute file paths by turning absolute paths into relative paths when the `preservePaths` flag is not set to `true`. This is achieved by stripping the absolute path root from any absolute file paths contained in a tar file. For example `/home/user/.bashrc` would turn into `home/user/.bashrc`. This logic was insufficient when file paths contained repeated path roots such as `////home/user/.bashrc`. `node-tar` would only strip a single path root from such paths. When given an absolute file path with repeating path roots, the resulting path (e.g. `///home/user/.bashrc`) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite. This issue was addressed in releases 3.2.2, 4.4.14, 5.0.6 and 6.1.1. Users may work around this vulnerability without upgrading by creating a custom `onentry` method which sanitizes the `entry.path` or a `filter` method which removes entries with absolute paths. See referenced GitHub Advisory for details. Be aware of CVE-2021-32803 which fixes a similar bug in later versions of tar.

Rincian

Terbit di NVD

3 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

15,1% peluang dieksploitasi; lebih tinggi dari 96,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf patch · advisory pihak ketiga
• https://github.com/npm/node-tar/commit/1f036ca23f64a547bdd6c79c1a44bc62e8115da4 patch · advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpuoct2021.html patch · advisory pihak ketiga
• https://github.com/npm/node-tar/security/advisories/GHSA-3jfq-g458-7qm9 mitigasi · advisory pihak ketiga
• https://www.npmjs.com/advisories/1770 mitigasi · advisory pihak ketiga
• https://www.npmjs.com/package/tar product · advisory pihak ketiga