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TI-2012-02143 Aliases CVE-2012-2417GHSA-v367-p58w-98h5

PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal…

Priority LOW 25CWE-310Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
None · Partial · None
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

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.

Why it matters now

EPSS 0.02357 83rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial PyCrypto (PyPI): 2.6Red Hat: 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—PyCrypto (PyPI)before 2.62.6Patch availableGHSA-v367-p58w-98h5
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • PyCrypto (PyPI) Vendor— Affected before 2.6 Fixed in 2.6 Patch available GHSA-v367-p58w-98h5

CPE configurations NVD · 21

CPEVersionsRoleVendor
cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:*up to 2.5VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.0.1:*:*:*:*:*:*:*1.0.1VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.0.2:*:*:*:*:*:*:*1.0.2VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.1:alpha2:*:*:*:*:*:*1.1 alpha2VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.9:alpha1:*:*:*:*:*:*1.9 alpha1VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.9:alpha2:*:*:*:*:*:*1.9 alpha2VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.9:alpha3:*:*:*:*:*:*1.9 alpha3VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.9:alpha4:*:*:*:*:*:*1.9 alpha4VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:1.9:alpha5:*:*:*:*:*:*1.9 alpha5VulnerableDlitz
  • cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:* Versions up to 2.5 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.0.1:*:*:*:*:*:*:* Versions 1.0.1 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.1:alpha2:*:*:*:*:*:* Versions 1.1 alpha2 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha1:*:*:*:*:*:* Versions 1.9 alpha1 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha2:*:*:*:*:*:* Versions 1.9 alpha2 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha3:*:*:*:*:*:* Versions 1.9 alpha3 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha4:*:*:*:*:*:* Versions 1.9 alpha4 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha5:*:*:*:*:*:* Versions 1.9 alpha5 Vulnerable ·Dlitz
Show 11 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:dlitz:pycrypto:1.9:alpha6:*:*:*:*:*:*1.9 alpha6VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.0:*:*:*:*:*:*:*2.0VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.0.1:*:*:*:*:*:*:*2.0.1VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.1.0:*:*:*:*:*:*:*2.1.0VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.1.0:alpha1:*:*:*:*:*:*2.1.0 alpha1VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.1.0:alpha2:*:*:*:*:*:*2.1.0 alpha2VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.1.0:beta1:*:*:*:*:*:*2.1.0 beta1VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.2:*:*:*:*:*:*:*2.2VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.3:*:*:*:*:*:*:*2.3VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.4:*:*:*:*:*:*:*2.4VulnerableDlitz
cpe:2.3:a:dlitz:pycrypto:2.4.1:*:*:*:*:*:*:*2.4.1VulnerableDlitz
  • cpe:2.3:a:dlitz:pycrypto:1.9:alpha6:*:*:*:*:*:* Versions 1.9 alpha6 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.0.1:*:*:*:*:*:*:* Versions 2.0.1 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.1.0:alpha1:*:*:*:*:*:* Versions 2.1.0 alpha1 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.1.0:alpha2:*:*:*:*:*:* Versions 2.1.0 alpha2 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.1.0:beta1:*:*:*:*:*:* Versions 2.1.0 beta1 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·Dlitz
  • cpe:2.3:a:dlitz:pycrypto:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Dlitz

Remediation

  • Fix · GHSA-v367-p58w-98h5 PyCrypto (PyPI) Fixed in 2.6 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-2417
  2. 2026-10-03 Alias added: GHSA-v367-p58w-98h5

References

Exploit 1

Advisory 7

Other 8

  • TI-2013-06111 Heap-based buffer overflow in the ALGnew function in block_templace.c in Python… CVSS 3.0CRITICAL 9.8
  • TI-2018-04861 lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key… CVSS 3.0HIGH 7.5
  • TI-2013-01262 The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences