PYSEC-2016-10

At a glance

Published: 2016-01-13
Updated: 2026-06-10
CVE: CVE-2016-1494
Aliases: GHSA-8rjr-6qq5-pj9p

Description

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.

Affected packages

Package	Versions
PyPI · rsa	introduced 0, fixed 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

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — PyPA Advisory Database