hong Nguyen identified a severe bug in the way GnuPG creates and uses
ElGamal keys, which can be used for signing. This vulnerability can be
used to trivially recover the private key. While the default behavior of
GnuPG when generating keys does not lead to the creation of unsafe
overriding the default settings an unsafe key could have been created.
If you are using ElGamal revoke those keys immediately.
The packages included in our upcoming update do not make such keys
safe to use -- they merely include a patch by David Shaw that disables
functions which would generate or use such keys.
RHSA-2003:395 in progress
CAN-2003-0971 Affects: 2.1AS 2.1AW 2.1ES 2.1WS
CAN-2003-0971 Affects: 3AS 3ES 3WS
An errata has been issued which should help the problem described in this bug report.
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen
this bug report if the solution does not work for you.