Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python | Rsa | < 3.3 |
| Fedoraproject | Fedora | 22 |
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.1 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175897.htThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175942.htThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00032.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/05/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/05/3Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/79829Third Party AdvisoryVDB Entry
- https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attacPatchThird Party Advisory
- https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/ExploitThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175897.htThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175942.htThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00032.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/05/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/05/3Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/79829Third Party AdvisoryVDB Entry
- https://bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attacPatchThird Party Advisory
FAQ
What is CVE-2016-1494?
CVE-2016-1494 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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.
How severe is CVE-2016-1494?
CVE-2016-1494 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-1494?
Check the references section above for vendor advisories and patch information. Affected products include: Python Rsa, Fedoraproject Fedora, Opensuse Leap, Opensuse Opensuse.