CVE-2020-8159

Published: May 12, 2020Modified: Jun 17, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.

Affected (2)

Products: Rubyonrails: Actionpack Page Caching · Debian: Debian Linux

Rubyonrails

1 product

Actionpack Page Caching

Debian

1 product

Debian Linux

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Rubyonrails Actionpack Page Caching	Before 1.2.1

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 9.0

Related CWEs

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (4)

https://groups.google.com/forum/#%21topic/rubyonrails-security/CFRVkEytdP8

Source: support@hackerone.com

https://lists.debian.org/debian-lts-announce/2021/07/msg00019.html

Source: support@hackerone.com

Mailing ListThird Party Advisory

https://groups.google.com/forum/#%21topic/rubyonrails-security/CFRVkEytdP8

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2021/07/msg00019.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

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