CVE-2018-20990 – tar

Package

Manager: cargo
Name: tar
Vulnerable Version: >=0 <0.4.16

Severity

Level: High

CVSS v3.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v4.0: 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

EPSS: 0.00299 pctl0.52778

Details

Arbitrary file overwrite in tar-rs When unpacking a tarball with the unpack_in-family of functions it's intended that only files within the specified directory are able to be written. Tarballs with hard links or symlinks, however, can be used to overwrite any file on the filesystem. Tarballs can contain multiple entries for the same file. A tarball which first contains an entry for a hard link or symlink pointing to any file on the filesystem will have the link created, and then afterwards if the same file is listed in the tarball the hard link will be rewritten and any file can be rewritten on the filesystem.

Metadata

Created: 2021-08-25T20:43:54Z
Modified: 2023-06-13T21:53:47Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-2367-c296-3mp2/GHSA-2367-c296-3mp2.json
CWE IDs: ["CWE-59"]
Alternative ID: GHSA-2367-c296-3mp2
Finding: F076
Auto approve: 1