CVE-2016-1494 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Reference

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.openwall.com/lists/oss-security/2016/01/05/1 http://www.openwall.com/lists/oss-security/2016/01/05/3 http://www.securityfocus.com/bid/79829 https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attack-in-verify-by/diff https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3