Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 54.1%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
- https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0
- https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp
- https://github.com/shrinerb/shrine/commit/1b27090ce31543bf39f186c20ea47c8250fca2f0
- https://github.com/shrinerb/shrine/security/advisories/GHSA-5jjv-x4fq-qjwp
Products affected by CVE-2020-15237
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cpe:2.3:a:shrinerb:shrine:0.9.0
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cpe:2.3:a:shrinerb:shrine:1.0.0
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cpe:2.3:a:shrinerb:shrine:1.1.0
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cpe:2.3:a:shrinerb:shrine:1.2.0
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cpe:2.3:a:shrinerb:shrine:1.3.0
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cpe:2.3:a:shrinerb:shrine:1.4.0
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cpe:2.3:a:shrinerb:shrine:1.4.1
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cpe:2.3:a:shrinerb:shrine:1.4.2
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cpe:2.3:a:shrinerb:shrine:2.0.0
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cpe:2.3:a:shrinerb:shrine:2.0.1
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cpe:2.3:a:shrinerb:shrine:2.1.0
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cpe:2.3:a:shrinerb:shrine:2.1.1
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cpe:2.3:a:shrinerb:shrine:2.10.0
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cpe:2.3:a:shrinerb:shrine:2.11.0
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cpe:2.3:a:shrinerb:shrine:2.12.0
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cpe:2.3:a:shrinerb:shrine:2.13.0
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cpe:2.3:a:shrinerb:shrine:2.14.0
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cpe:2.3:a:shrinerb:shrine:2.15.0
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cpe:2.3:a:shrinerb:shrine:2.16.0
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cpe:2.3:a:shrinerb:shrine:2.17.0
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cpe:2.3:a:shrinerb:shrine:2.17.1
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cpe:2.3:a:shrinerb:shrine:2.18.0
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cpe:2.3:a:shrinerb:shrine:2.19.0
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cpe:2.3:a:shrinerb:shrine:2.19.1
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cpe:2.3:a:shrinerb:shrine:2.19.2
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cpe:2.3:a:shrinerb:shrine:2.19.3
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cpe:2.3:a:shrinerb:shrine:2.19.4
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cpe:2.3:a:shrinerb:shrine:2.2.0
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cpe:2.3:a:shrinerb:shrine:2.3.0
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cpe:2.3:a:shrinerb:shrine:2.3.1
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cpe:2.3:a:shrinerb:shrine:2.4.0
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cpe:2.3:a:shrinerb:shrine:2.4.1
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cpe:2.3:a:shrinerb:shrine:2.5.0
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cpe:2.3:a:shrinerb:shrine:2.6.0
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cpe:2.3:a:shrinerb:shrine:2.6.1
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cpe:2.3:a:shrinerb:shrine:2.7.0
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cpe:2.3:a:shrinerb:shrine:2.8.0
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cpe:2.3:a:shrinerb:shrine:2.9.0
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cpe:2.3:a:shrinerb:shrine:3.0.0
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cpe:2.3:a:shrinerb:shrine:3.0.1
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cpe:2.3:a:shrinerb:shrine:3.1.0
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cpe:2.3:a:shrinerb:shrine:3.2.0
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cpe:2.3:a:shrinerb:shrine:3.2.1
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cpe:2.3:a:shrinerb:shrine:3.2.2