Vulnerability Details CVE-2016-9243
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.017
EPSS Ranking 81.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://www.openwall.com/lists/oss-security/2016/11/09/2
- http://www.securityfocus.com/bid/94216
- http://www.ubuntu.com/usn/USN-3138-1
- https://cryptography.io/en/latest/changelog
- https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874
- https://github.com/pyca/cryptography/issues/3211
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/
- http://www.openwall.com/lists/oss-security/2016/11/09/2
- http://www.securityfocus.com/bid/94216
- http://www.ubuntu.com/usn/USN-3138-1
- https://cryptography.io/en/latest/changelog
- https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874
- https://github.com/pyca/cryptography/issues/3211
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/
Products affected by CVE-2016-9243
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cpe:2.3:a:cryptography.io:cryptography:0.1
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cpe:2.3:a:cryptography.io:cryptography:0.2
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cpe:2.3:a:cryptography.io:cryptography:0.2.1
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cpe:2.3:a:cryptography.io:cryptography:0.2.2
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cpe:2.3:a:cryptography.io:cryptography:0.3
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cpe:2.3:a:cryptography.io:cryptography:0.4
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cpe:2.3:a:cryptography.io:cryptography:0.5
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cpe:2.3:a:cryptography.io:cryptography:0.5.1
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cpe:2.3:a:cryptography.io:cryptography:0.5.2
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cpe:2.3:a:cryptography.io:cryptography:0.5.3
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cpe:2.3:a:cryptography.io:cryptography:0.5.4
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cpe:2.3:a:cryptography.io:cryptography:0.6
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cpe:2.3:a:cryptography.io:cryptography:0.6.1
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cpe:2.3:a:cryptography.io:cryptography:0.7
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cpe:2.3:a:cryptography.io:cryptography:0.7.1
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cpe:2.3:a:cryptography.io:cryptography:0.7.2
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cpe:2.3:a:cryptography.io:cryptography:0.8
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cpe:2.3:a:cryptography.io:cryptography:0.8.1
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cpe:2.3:a:cryptography.io:cryptography:0.8.2
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cpe:2.3:a:cryptography.io:cryptography:0.9
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cpe:2.3:a:cryptography.io:cryptography:0.9.1
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cpe:2.3:a:cryptography.io:cryptography:0.9.2
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cpe:2.3:a:cryptography.io:cryptography:0.9.3
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cpe:2.3:a:cryptography.io:cryptography:1.0
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cpe:2.3:a:cryptography.io:cryptography:1.0.1
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cpe:2.3:a:cryptography.io:cryptography:1.0.2
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cpe:2.3:a:cryptography.io:cryptography:1.1
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cpe:2.3:a:cryptography.io:cryptography:1.1.1
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cpe:2.3:a:cryptography.io:cryptography:1.1.2
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cpe:2.3:a:cryptography.io:cryptography:1.2
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cpe:2.3:a:cryptography.io:cryptography:1.2.1
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cpe:2.3:a:cryptography.io:cryptography:1.2.2
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cpe:2.3:a:cryptography.io:cryptography:1.2.3
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cpe:2.3:a:cryptography.io:cryptography:1.3
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cpe:2.3:a:cryptography.io:cryptography:1.3.1
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cpe:2.3:a:cryptography.io:cryptography:1.3.2
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cpe:2.3:a:cryptography.io:cryptography:1.3.3
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cpe:2.3:a:cryptography.io:cryptography:1.3.4
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cpe:2.3:a:cryptography.io:cryptography:1.4
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cpe:2.3:a:cryptography.io:cryptography:1.5
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cpe:2.3:a:cryptography.io:cryptography:1.5.1
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cpe:2.3:a:cryptography.io:cryptography:1.5.2
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:16.10
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cpe:2.3:o:fedoraproject:fedora:23
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cpe:2.3:o:fedoraproject:fedora:24
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cpe:2.3:o:fedoraproject:fedora:25