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CVE-2020-15237

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CVE-2020-15237

Published: Oct 5, 2020

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

5.9

MEDIUM

Description

In Shrine before version 3.3.0, when using the `derivation_endpoint` plugin, it's possible for the attacker to use a timing attack to guess the signature of the derivation URL. The problem has been fixed by comparing sent and calculated signature in constant time, using `Rack::Utils.secure_compare`. Users using the `derivation_endpoint` plugin are urged to upgrade to Shrine 3.3.0 or greater. A possible workaround is provided in the linked advisory.

VendorProductVersions

shrinerb

shrine

affected
< 3.3.0

Weaknesses (CWE)

CWE-208
CWE-203

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

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