—

PYSEC-2016-10

Quick fix

PYSEC-2016-10 — rsa: upgrade to the fixed version with the command below.

pip install --upgrade 'rsa>=3.3'

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/rsa

Introduced in: 0Fixed in: 3.3

Fixpip install --upgrade 'rsa>=3.3'

References

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