PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers t
PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pycrypto | < 2.6 | 2.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2012-2417
- https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2
- https://bugs.launchpad.net/pycrypto/+bug/985164
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75871
- https://github.com/Legrandin/pycrypto
- https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog
- https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2012-16.yaml
- https://hermes.opensuse.org/messages/15083589
- https://web.archive.org/web/20140724111917/http://secunia.com/advisories/49263
- https://web.archive.org/web/20200228184120/http://www.securityfocus.com/bid/53687
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081713.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081759.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081789.html
- http://www.debian.org/security/2012/dsa-2502
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:117
- http://www.openwall.com/lists/oss-security/2012/05/25/1
- http://secunia.com/advisories/49263
- http://www.osvdb.org/82279
- http://www.securityfocus.com/bid/53687
- https://github.com/advisories/GHSA-v367-p58w-98h5
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
-- Platform
- Python (PyPI)
- Package
pycrypto- Disclosed
- 17.06.2012
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-v367-p58w-98h5 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2012-16 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: pycrypto
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 06.2012 02.2018
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 1
Disclosures per year
- 2017: 1
- 2018: 1
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
earlier: 2
-
PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers t this entry
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