PT-2021-22005 · Go-Unarr · Go-Unarr

Th1Nkkk · Published 2021-08-08 · Updated 2024-08-21 · CVE-2021-38197

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: go-unarr versions 0.1.1

Description: The issue allows Directory Traversal via ../ in a pathname within a TAR archive. This is possible due to a flaw in the unarr.go file in go-unarr.

Recommendations: For go-unarr version 0.1.1, consider restricting the handling of TAR archives to prevent directory traversal attacks until a patch is available. As a temporary workaround, consider validating and sanitizing pathnames within TAR archives to prevent ../ sequences from being processed. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-38197

GHSA-V9J4-CP63-QV62

GO-2022-0929

Affected Products

Go-Unarr

References · 9

• 🔥 https://github.com/gen2brain/go-unarr/issues/21 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-38197 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38197 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2022-0929 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-v9j4-cp63-qv62 · Vendor Advisory
• https://github.com/gen2brain/go-unarr/releases/tag/v0.1.4 · Note
• https://github.com/gen2brain/go-unarr/commit/239ec404d348280b50bbf671327709e8857fc5f4 · Note
• https://t.me/cvenotify/18868 · Telegram Post
• https://github.com/advisories/GHSA-v9j4-cp63-qv62 · Note