Vulnerability in Py-Bcrypt
CVE-2013-1895
The py-bcrypt module before 0.3 for Python does not properly handle concurrent memory access, which allows attackers to bypass authentication via multiple authentication requests, which trigger the password hash to be overwritten.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.028 (86.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Py-Bcrypt — versions before 0.3
- Python Py-Bcrypt
- Fedoraproject Fedora — versions 17, 18
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2013/03/26/2 (Mailing List, Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2013-April/101387.html (Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2013-April/101382.html (Third Party Advisory, Tool Signature)
- www.securityfocus.com/bid/58702 (VDB Entry, Third Party Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/83039 (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2013-1895?
- CVE-2013-1895 is a high-severity vulnerability in Py-Bcrypt, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2020-01-28.
- How severe is CVE-2013-1895?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2013-1895 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.