Vulnerability CVE-2016-1494
Published: 2016-01-13

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.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Python -> Python 
Python -> RSA 
Opensuse -> LEAP 
Opensuse -> Opensuse 
Fedoraproject -> Fedora 

 References:
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/
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