Libgcrypt before 1.6.3 and GnuPG before 1.4.19 does not implement ciphertext blinding for Elgamal decryption, which allows physically proximate attackers to obtain the server's private key by determining factors using crafted ciphertext and the fluctuations in the electromagnetic field during multiplication.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade gnupgUpgrade libgcrypt20Upgrade libgcrypt11 | Jul 30, 2024 | Nov 29, 2019 |
| Gentoo Linux | — | Upgrade app-crypt/gnupg.Upgrade dev-libs/libgcrypt. | Oct 30, 2017 | Oct 10, 2016 |
| Huawei Euleros 2_0_sp2 | — | Upgrade libgcryptUpgrade libgcrypt-devel | Jun 17, 2020 | Nov 29, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade libgcrypt-develUpgrade libgcrypt | Apr 16, 2020 | Nov 29, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade libgcrypt-develUpgrade libgcrypt | Dec 27, 2019 | Nov 29, 2019 |
| Oracle Solaris | — | Upgrade system/library/security/libgcrypt to version 1.8.8-11.4.36.0.1.101.0 on Solaris 11.4 | Aug 27, 2021 | Nov 29, 2019 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Nov 29, 2019 |
| Suse | — | Upgrade libgcrypt-devel-32bitUpgrade libgcrypt11-x86Upgrade libgcrypt-develUpgrade libgcrypt11-32bitUpgrade libgcrypt20-hmac-32bitUpgrade libgcrypt20-32bitUpgrade libgcrypt11Upgrade libgcrypt20-hmacUpgrade libgcrypt20 | Dec 18, 2015 | Apr 1, 2015 |
| Ubuntu | — | Upgrade gnupg2Upgrade gnupgUpgrade libgcrypt20Upgrade libgcrypt11 | Nov 8, 2024 | Nov 29, 2019 |
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