Security Advisories (2)
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.
- 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
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965
- https://dev.gnupg.org/T4011
- https://www.debian.org/security/2018/dsa-4231
- https://usn.ubuntu.com/3689-2/
- https://usn.ubuntu.com/3689-1/
- http://www.securitytracker.com/id/1041147
- http://www.securitytracker.com/id/1041144
- https://usn.ubuntu.com/3692-2/
- https://usn.ubuntu.com/3692-1/
- https://lists.debian.org/debian-lts-announce/2018/06/msg00013.html
- https://access.redhat.com/errata/RHSA-2018:3221
- https://access.redhat.com/errata/RHSA-2018:3505
- https://usn.ubuntu.com/3850-1/
- https://usn.ubuntu.com/3850-2/
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://access.redhat.com/errata/RHSA-2019:1297
- https://access.redhat.com/errata/RHSA-2019:1296
- https://access.redhat.com/errata/RHSA-2019:1543
- https://access.redhat.com/errata/RHSA-2019:2237
Changes for version 1.6.5.0 - 2016-03-10
- Upgrade to v1.6.5
Modules
Module Install Instructions
To install Alien::GCrypt, copy and paste the appropriate command in to your terminal.
cpanm Alien::GCryptperl -MCPAN -e shell
install Alien::GCryptFor more information on module installation, please visit the detailed CPAN module installation guide.