PT-2018-3105 · Ruby+5 · Ruby+5
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Published
2018-04-01
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Updated
2020-06-09
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CVE-2018-8780
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Ruby versions prior to 2.2.10
Ruby versions 2.3.x prior to 2.3.7
Ruby versions 2.4.x prior to 2.4.4
Ruby versions 2.5.x prior to 2.5.1
Ruby version 2.6.0-preview1
Description
The issue arises from the Dir.open, Dir.new, Dir.entries, and Dir.empty? methods not checking for NULL characters, potentially leading to unintentional directory traversal. This could allow a remote attacker to gain unauthorized access to protected data or impact the integrity of protected information.
Recommendations
For Ruby versions prior to 2.2.10, update to version 2.2.10 or later.
For Ruby versions 2.3.x prior to 2.3.7, update to version 2.3.7 or later.
For Ruby versions 2.4.x prior to 2.4.4, update to version 2.4.4 or later.
For Ruby versions 2.5.x prior to 2.5.1, update to version 2.5.1 or later.
For Ruby version 2.6.0-preview1, update to a later version.
As a temporary workaround, consider restricting access to the
Dir.open, Dir.new, Dir.entries, and Dir.empty? methods until a patch is available.Exploit
Fix
Path traversal
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Red Hat
Ruby
Suse
Ubuntu