{
  "id": "CVE-2021-33560",
  "is_known_exploited_vuln": false,
  "tickets": [],
  "description": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.",
  "urls": [
    "https://nvd.nist.gov/vuln/detail/CVE-2021-33560",
    "https://dev.gnupg.org/T5466",
    "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61",
    "https://dev.gnupg.org/T5305",
    "https://dev.gnupg.org/T5328",
    "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html",
    "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/",
    "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/",
    "https://www.oracle.com/security-alerts/cpuoct2021.html",
    "https://www.oracle.com/security-alerts/cpujan2022.html",
    "https://www.oracle.com/security-alerts/cpuapr2022.html",
    "https://www.oracle.com/security-alerts/cpujul2022.html"
  ]
}
{
  "id": "CVE-2021-40528",
  "is_known_exploited_vuln": false,
  "tickets": [],
  "description": "The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.",
  "urls": [
    "https://nvd.nist.gov/vuln/detail/CVE-2021-40528",
    "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1",
    "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2",
    "https://eprint.iacr.org/2021/923",
    "https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=3462280f2e23e16adf3ed5176e0f2413d8861320"
  ]
}