Joined: 13 Jun 2003
Location: Dresden, Germany
|Posted: Thu Mar 24, 2005 10:06 pm Post subject: [ GLSA 200503-29 ] GnuPG: OpenPGP protocol attack
|Gentoo Linux Security Advisory
Title: GnuPG: OpenPGP protocol attack (GLSA 200503-29)
Date: March 24, 2005
Automated systems using GnuPG may leak plaintext portions of an encrypted message.
GnuPG is complete and free replacement for PGP, a tool for secure communication and data storage.
Vulnerable: < 1.4.1
Unaffected: >= 1.4.1
Architectures: All supported architectures
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"
Last edited by GLSA on Sun May 07, 2006 4:55 pm; edited 1 time in total