Automated systems using GnuPG may leak plaintext portions of an encrypted message.
|Package||app-crypt/gnupg on all architectures|
|Affected versions||< 1.4.1|
|Unaffected versions||>= 1.4.1|
GnuPG is complete and free replacement for PGP, a tool for secure communication and data storage.
A flaw has been identified in an integrity checking mechanism of the OpenPGP protocol.
An automated system using GnuPG that allows an attacker to repeatedly discover the outcome of an integrity check (perhaps by observing the time required to return a response, or via overly verbose error messages) could theoretically reveal a small portion of plaintext.
There is no known workaround at this time.
All GnuPG users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.1"
March 24, 2005
March 24, 2005: 01