Improper input validation in Python Rsa
CVE-2016-1494
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.071 (94.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.071 · newest: 0.071 · change: 0.000
Affected products
- Python Rsa
- Fedoraproject Fedora — versions 22, 23
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.1, 13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2016/01/05/3 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/79829 (VDB Entry, Third Party Advisory, vdb-entry)
- blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/ (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/01/05/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175897.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2016-01/msg00032.html (vendor-advisory, Mailing List, Third Party Advisory)
- bitbucket.org/sybren/python-rsa/pull-requests/14/security-fix-bb06-attack-in-ve… (Patch, Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175942.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-1494?
- CVE-2016-1494 is a medium-severity vulnerability in Python Rsa, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2016-01-13.
- How severe is CVE-2016-1494?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2016-1494 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.