ISOMAN

CVE

CVE-2018-6594

lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation.

Severity
HIGH
CVSS
7.5
Published
Modified
NVD detailAll CVEs

Linked Releases

DistributionReleaseStatusEvidence
Ubuntu16.04.7 amd64 desktopunknownsource
Ubuntu16.04.6 i386 desktopunknownsource
Ubuntu16.04.7 amd64 serverunknownsource
Ubuntu16.04.6 i386 serverunknownsource
Ubuntu14.04.6 amd64 desktopunknownsource
Ubuntu14.04.6 i386 desktopunknownsource
Ubuntu14.04.6 amd64 serverunknownsource
Ubuntu14.04.6 i386 serverunknownsource

References

  1. https://github.com/TElgamal/attack-on-pycrypto-elgamal
  2. https://github.com/dlitz/pycrypto/issues/253
  3. https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
  4. https://security.gentoo.org/glsa/202007-62
  5. https://usn.ubuntu.com/3616-1/
  6. https://usn.ubuntu.com/3616-2/
  7. https://github.com/TElgamal/attack-on-pycrypto-elgamal
  8. https://github.com/dlitz/pycrypto/issues/253
  9. https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
  10. https://security.gentoo.org/glsa/202007-62
  11. https://usn.ubuntu.com/3616-1/
  12. https://usn.ubuntu.com/3616-2/