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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2018-6594US | high7.5 | — | ||
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 (… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/TElgamal/attack-on-pycrypto-elgamalWEB
- https://github.com/advisories/GHSA-6528-wvf6-f6qgADVISORY
- https://github.com/dlitz/pycrypto/issues/253REPORT
- https://lists.debian.org/debian-lts-announce/2018/02/msg00018.htmlWEB
- https://security.gentoo.org/glsa/202007-62ADVISORY
- https://usn.ubuntu.com/3616-1/WEB
- https://usn.ubuntu.com/3616-2/WEB
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