grnet/python-bcrypt · Security
Improper Restriction of Excessive Authentication Attempts in py-bcrypt
- GHSA ID
- GHSA-r838-q6jp-58xx
- CVE ID
- CVE-2013-1895
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS v4
- 8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Description
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.
CWEs
- CWE-307 · Improper Restriction of Excessive Authentication Attempts
References
- https://nvd.nist.gov/vuln/detail/CVE-2013-1895 ↗
- https://exchange.xforce.ibmcloud.com/vulnerabilities/83039 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101382.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101387.html ↗
- http://www.openwall.com/lists/oss-security/2013/03/26/2 ↗
- https://github.com/advisories/GHSA-r838-q6jp-58xx ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/py-bcrypt/PYSEC-2020-249.yaml ↗