Two vulnerabilities have been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise an application using the library.
1) An error within progressive applications when handling image row data can be exploited to potentially cause a buffer overflow by e.g. providing one additional image row beyond the height reported in the header.
Successful exploitation may allow the execution of arbitrary code.
2) A memory leak exists within the handling of certain sCAL chunks. This can be exploited to e.g. cause a crash via specially crafted PNG images.
The vulnerabilities are reported in versions prior to 1.2.44 and 1.4.3.
Solution: Update to version 1.2.44 and 1.4.3.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: libpng:
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Subject: libpng Two Vulnerabilities
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