CVE Vulnerability

CVE-2020-15237

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp Third Party Advisory
https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:shrinerb:shrine:*:*:*:*:*:ruby:*:*
Information

Published : 2020-10-05 07:15

Updated : 2020-10-19 01:39

NVD link : CVE-2020-15237

Mitre link : CVE-2020-15237

Products Affected
No products.
CWE
CWE-203

CWE-208