Improper Input Validation Affecting python-cryptography package, versions <1.5.3-1
Threat Intelligence
EPSS
0.4% (74th
percentile)
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-PYTHONCRYPTOGRAPHY-312014
- published 27 Mar 2017
- disclosed 27 Mar 2017
Introduced: 27 Mar 2017
CVE-2016-9243 Open this link in a new tabHow to fix?
Upgrade Debian:unstable python-cryptography to version 1.5.3-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-cryptography package and not the python-cryptography package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
References
- https://security-tracker.debian.org/tracker/CVE-2016-9243
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5R2ZOBMPWDFFHUZ6QOZZY36A6H5CGJXL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U23KDR2M2N7W2ZSREG63BVW7D4VC6CIZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQ5G7KHKZC4SI23JE7277KZXM57GEQKT/
- https://github.com/pyca/cryptography/commit/b924696b2e8731f39696584d12cceeb3aeb2d874
- https://github.com/pyca/cryptography/issues/3211
- https://cryptography.io/en/latest/changelog
- http://www.openwall.com/lists/oss-security/2016/11/09/2
- http://www.securityfocus.com/bid/94216
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9243
- http://www.ubuntu.com/usn/USN-3138-1
- 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/
CVSS Scores
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