News and History of the MNG Developers from 2002
Herein lie news items and historical stuff regarding MNG. Feel free to poke
around, but note that some of the links, particularly the older ones, may be
broken. Keep in mind that this is history here...
- latest - see here
- 26 November 2002 - Version 1.1 of the MNG
specification is approved by official vote of the MNG developers
(although the results aren't actually announced until 8 January).
It clarifies that the "interframe delay" also applies to the interval
after the final frame is displayed, regardless of whether the animation
loops, and that decoders must insert a background layer regardless
of the framing mode (FRAM chunk); these changes affect only the full MNG
specification, not the low-complexity subset (MNG-LC) or JNG. It also
notes the possibility of patent issues with regard to JNG (due to its
use of JPEG) and
includes a bunch of minor editorial fixes.
- 20 October 2002 - A veritable explosion of new (or at least newly
discovered) MNG-supporting applications resulted in the splitting of the
MNG-supporting Applications page into ten new
In all, there are about 80 applications, libraries, and devices listed.
- 23 June 2002 - libmng 1.0.4 is released. This is a maintenance release that
merely fixes some small bugs. The Windows binaries are compiled against
zlib 1.1.4 and lcms 1.08.
- 11 March 2002 - zlib 1.1.4 is released. This version fixes
a security vulnerability (CERT note, Red Hat advisory) wherein specially crafted, invalid deflate
streams can trigger zlib to free a memory buffer twice, leading to
potential denial-of-service attacks (and perhaps worse). This bug
additionally depends on the version of malloc/free in the platform's C
library not checking for such cases; AIX and almost all Linux
systems (glibc-based) are vulnerable, but Windows, Mac OS, FreeBSD,
NetBSD, OpenBSD, and HP-UX reportedly are not.
Here are the other MNG-related pages at this site:
Last modified 14 March 2009.
Copyright © 1996-2009 Greg Roelofs.