Headline
CVE-2015-8126: security - CVE request: libpng buffer overflow in png_set_PLTE
Multiple buffer overflows in the (1) png_set_PLTE and (2) png_get_PLTE functions in libpng before 1.0.64, 1.1.x and 1.2.x before 1.2.54, 1.3.x and 1.4.x before 1.4.17, 1.5.x before 1.5.24, and 1.6.x before 1.6.19 allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a small bit-depth value in an IHDR (aka image header) chunk in a PNG image.
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Date: Thu, 12 Nov 2015 13:26:27 -0500 From: Glenn Randers-Pehrson <glennrp@…il.com> To: oss-security@…ts.openwall.com Subject: CVE request: libpng buffer overflow in png_set_PLTE
I request a CVE for a vulnerability in libpng, all versions, in the png_set_PLTE/png_get_PLTE functions. These functions failed to check for an out-of-range palette when reading or writing PNG files with a bit_depth less than 8. Some applications might read the bit depth from the IHDR chunk and allocate memory for a 2^N entry palette, while libpng can return a palette with up to 256 entries even when the bit depth is less than 8.
libpng versions 1.6.19, 1.5.24, 1.4.17, 1.2.54, and 1.0.64 were released today (12 November 2015) to fix this vulnerability. See libpng.sourceforge.net
regards,
Glenn Randers-Pehrson libpng custodian
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