high7.5
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 read…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Dlitz | Pycrypto | through 2.6.1 |
| Debian | Debian Linux | Version 7.0 |
| Canonical | Ubuntu Linux | Versions 12.04, 14.04, 16.04, 17.10 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/TElgamal/attack-on-pycrypto-elgamal
- https://github.com/dlitz/pycrypto/issues/253
- https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
- https://security.gentoo.org/glsa/202007-62
- https://usn.ubuntu.com/3616-1/
- https://usn.ubuntu.com/3616-2/
- https://github.com/TElgamal/attack-on-pycrypto-elgamal
- https://github.com/dlitz/pycrypto/issues/253
- https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
- https://security.gentoo.org/glsa/202007-62
- https://usn.ubuntu.com/3616-1/
- https://usn.ubuntu.com/3616-2/