Overview
libpng reads uninitialized memory when processing invalid sCAL chunks.
Description
When libpng encounters a sCAL chunk that is empty it will read uninitialized memory. libpng also does not properly handle a sCAL chunk that lacks the terminating zero between the two strings conveyed. Additional details can be found on the png-mng-implement mailing list archives. |
Impact
By tricking a user into opening a specifically crafted PNG file within an application that uses libpng, an attacker may be able to cause a denial of service crash. |
Solution
Apply an Update |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
Acknowledgements
Thanks to Glenn Randers-Pehrson for reporting this vulnerability.
This document was written by Jared Allar.
Other Information
| CVE IDs: | CVE-2011-2692 |
| Severity Metric: | 0.65 |
| Date Public: | 2011-07-07 |
| Date First Published: | 2011-07-07 |
| Date Last Updated: | 2011-07-07 18:39 UTC |
| Document Revision: | 12 |