PYSEC-2016-10

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PYSEC-2016-10

Summary:

Details: The verify function in the RSA package for Python (Python-RSA) before 3.3 allows attackers to spoof signatures with a small public exponent via crafted signature padding, aka a BERserk attack.

References: http://www.openwall.com/lists/oss-security/2016/01/05/3, http://www.openwall.com/lists/oss-security/2016/01/05/1, https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/, https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attack-in-verify-by/diff, http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175897.html, http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175942.html, http://lists.opensuse.org/opensuse-updates/2016-01/msg00032.html, http://www.securityfocus.com/bid/79829, https://github.com/advisories/GHSA-8rjr-6qq5-pj9p