CVE-2020-15237
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.
SeverityMedium
CVSS5.9
Exploit probability—
ProductShrine
PublishedOct 5, 2020
First seenOct 5, 2020
Weakness typeCWE-208CWE-208CWE-203CWE-203
How to fix
Update
- shrinerb shrine3.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| shrinerb shrine | v < 3.3.0 | 3.3.0 |
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