Critical vulnerabilities in Windows and Adobe Reader exposed by hacker


ESET Ireland

A hacker has published an extensive list of Adobe Reader and Windows vulnerabilities based on his research into a relatively obscure area of font management.

Google Project Zero hacker Mateusz Jurczyk found a total of 15 vulnerabilities, any of which could trigger remote code execution or privilege escalation in Adobe Reader or the Windows kernel. However, the two worst (detailed as CVE-2015-3052 for 32-bit and CVE-2015-0093 for 64-bit) exist in the Adobe Type Manager Font Driver, which has existed in the Windows kernel since Windows NT 4.

He told IT blog the The Register that the most serious, an ‘entirely reliable’ BLEND instruction exploit relates to the handling of CharStrings that are responsible for drawing the shape of each glyph at a particular point size.

“The extremely powerful primitive provided by the vulnerability – together with the fact that it affected all supported versions of both Adobe Reader and Microsoft Windows…

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