ZipArchive::extractTo may extract outside of destination dir (PHP Group PHP)

CVE-2021-21706
MEDIUM 5.3

At a glance

Source
NVD
EPSS
EPSS 1.52 % · percentile 75 ()
State
PUBLISHED
Published
Updated
Assigner
php
NVD status
Modified

Description

In PHP versions 7.3.x below 7.3.31, 7.4.x below 7.4.24 and 8.0.x below 8.0.11, in Microsoft Windows environment, ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file, thus potentially causing files to be created or overwritten, subject to OS permissions.

Weaknesses (CWE)

  • CWE-24 — Path Traversal: '../filedir'
  • CWE-22 — Improper Limitation of a Pathname to a Restricted Directory

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:Nphp
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:NNVD · security@php.net (Secondary)
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 4.3AV:N/AC:M/Au:N/C:N/I:P/A:NNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
PHP Group · PHPaffected 7.3.x < 7.3.31 ; affected 7.4.x < 7.4.24 ; affected 8.0.X < 8.0.11

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD