A vulnerability in Libgcrypt could allow a remote attacker to extract ElGamal private key information.
|Package||dev-libs/libgcrypt on all architectures|
|Affected versions||< 1.5.4|
|Unaffected versions||>= 1.5.4|
Libgcrypt is a general purpose cryptographic library derived out of GnuPG.
A vulnerability in the implementation of ElGamal decryption procedures of Libgcrypt leaks information to various side-channels.
A physical side-channel attack allows a remote attacker to fully extract decryption keys during the decryption of a chosen ciphertext.
There is no known workaround at this time.
All Libgcrypt users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libgcrypt-1.5.4"
August 29, 2014
August 29, 2014: 1