CVE-2010-0205 libpng stalls and consumes large quantities of memory while processing certain PNG files
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
libpng (Debian) |
Fix Released
|
Unknown
|
|||
libpng (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
http://
http://
https:/
libpng stalls on highly compressed ancillary chunks
Libpng stalls and consumes large quantities of memory while processing
certain Portable Network Graphics (PNG) files.
When processing PNG files containing highly compressed ancillary chunks,
the png_decompress_
of CPU time and memory. This resource consumption may hang applications
that use libpng. More information is available in the PNG Development
Group security advisory and supplementary document, Defending Libpng
Applications Against Decompression Bombs.
This vulnerability could allow an unauthenticated, remote attacker to
cause a denial of service.
http://
Libpng provides functions to limit memory consumption and number of
cached ancillary chunks. Applications that use libpng should use these
functions to set appropriate limits. Please see defense #2 in the
document Defending Libpng Applications Against Decompression Bombs (see
web page above) for more information.
Developers who build versions of libpng can choose to ignore ancillary
chunks by defining specific preprocessor macros. Please see defense #3
in the document Defending Libpng Applications Against Decompression
Bombs (see web page above) for more information.
visibility: | private → public |
Changed in libpng (Ubuntu): | |
status: | New → Confirmed |
importance: | Undecided → Medium |
Changed in libpng (Debian): | |
status: | Unknown → Fix Released |
This bug was fixed in the package libpng - 1.2.37-1ubuntu0.1
---------------
libpng (1.2.37-1ubuntu0.1) karmic-security; urgency=low
* SECURITY UPDATE: denial of service via decompression bomb (LP: #533140) patches/ 02-CVE- 2010-0205. patch: use new two-pass decompression
- debian/
method in pngrutil.c.
- CVE-2010-0205
-- Marc Deslauriers <email address hidden> Fri, 12 Mar 2010 10:53:26 -0500