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CVE-2012-2417
PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature…
Medium4.3EPSS 2.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Timeline
ID reserved
By mitre
- 54 days later
· 54 days later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 2.4% · top 16% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIPyCryptoGHSA-v367-p58w-98h5 (opens in a new tab)
References (14)
- DSA-2502 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 82279 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- FEDORA-2012-8470 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2 (opens in a new tab)x_refsource_MISCx_transferred
- MDVSA-2012:117 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 53687 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://bugs.launchpad.net/pycrypto/+bug/985164 (opens in a new tab)x_refsource_MISCx_transferred
- FEDORA-2012-8392 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 49263 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- FEDORA-2012-8490 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20120524 CVE-2012-2417 - PyCrypto <= 2.5 insecure ElGamal key generation (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2012:0830 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- pycrypto-keys-weak-security(75871) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-v367-p58w-98h5 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-2417)Record last updated .