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Files from mjurczyk

Email addressmjurczyk at google.com
First Active2015-08-19
Last Active2024-04-11
Microsoft Font Subsetting DLL ReadAllocFormat12CharGlyphMapList Heap Corruption
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Microsoft Font Subsetting DLL suffers from a heap corruption vulnerability in ReadAllocFormat12CharGlyphMapList.

tags | exploit
advisories | CVE-2019-1151
SHA-256 | 13242e827b1f0a3ff93c57d1a71e5f493fc85117660e0d5e79eebecfaf18ab70
Microsoft Font Subsetting DLL ReadTableIntoStructure Heap Corruption
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Microsoft Font Subsetting DLL suffers from a heap corruption vulnerability in ReadTableIntoStructure.

tags | exploit
advisories | CVE-2019-1150
SHA-256 | 544427667509a091f6d7efe745438ad65a9a17d6c0bfcf266fd3e755022d8081
Microsoft Font Subsetting DLL FixSbitSubTables Heap Corruption
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Microsoft Font Subsetting DLL suffers from a heap corruption vulnerability in FixSbitSubTables.

tags | exploit
advisories | CVE-2019-1149
SHA-256 | f46d17c954f6e94d032c69f8511236395dead5379f423b21f856132b36934f44
Microsoft Font Subsetting DLL MergeFormat12Cmap / MakeFormat12MergedGlyphList Double-Free
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Microsoft Font Subsetting DLL suffers from a double free vulnerability in MergeFormat12Cmap / MakeFormat12MergedGlyphList.

tags | exploit
advisories | CVE-2019-1144
SHA-256 | e29f02948fd332ebe7380f90073aaba9ef4f2e354110987119fdb6b3fe07c0e4
Microsoft Font Subsetting DLL GetGlyphId Out-Of-Bounds Read
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Microsoft Font Subsetting DLL suffers from a heap-based out-of-bounds read vulnerability in GetGlyphIdx.

tags | exploit
advisories | CVE-2019-1148
SHA-256 | 9840199e16c8736422d5492c789d03b84c0e50af20ddc637d17924f826b4c265
Microsoft Font Subsetting DLL MergeFontPackage Dangling Pointer
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

The Microsoft Font Subsetting DLL (fontsub.dll) is a default Windows helper library for subsetting TTF fonts. It has an issue where it returns a dangling pointer via MergeFontPackage.

tags | exploit
systems | windows
advisories | CVE-2019-1145
SHA-256 | b7462443e93a2f335edb0fa0cb618f1ca09b68a645524a4da907045e4cbecac9
Adobe Acrobat CoolType (AFDKO) Type 1 Font Uninitialized Memory Issue
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Adobe Acrobat CoolType (AFDKO) performs a call from uninitialized memory due to an empty FDArray in Type 1 fonts.

tags | exploit
advisories | CVE-2019-8017
SHA-256 | ee99bdb3d2d2a70010bf2a086b44062bad866bcffaebcb151253aa34f15fa2e0
Adobe Acrobat CoolType (AFDKO) Type 1 Font Memory Corruption
Posted Aug 15, 2019
Authored by Google Security Research, mjurczyk

Adobe Acrobat CoolType (AFDKO) suffers from a memory corruption vulnerability in the handling of Type 1 font load/store operators.

tags | exploit
advisories | CVE-2019-8016
SHA-256 | fffe2236225f9e4d3de8ed6ad23bf638c3e2c3dd9c3515264d5d9e52c22749ea
Microsoft Font Subsetting DLL ComputeFormat4CmapData Heap Corruption
Posted Jul 12, 2019
Authored by Google Security Research, mjurczyk

There is a Microsoft Font Subsetting DLL heap corruption vulnerability in ComputeFormat4CmapData.

tags | exploit
SHA-256 | 88c8f33972cfdf8c4a1abf07e27de14c8a881010277ba8de5406bd72df2dced1
Microsoft DirectWrite / AFDKO OpenType Stack Corruption
Posted Jul 12, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a stack corruption vulnerability in OpenType font handling while processing CFF blend DICT operator.

tags | exploit
advisories | CVE-2019-1123
SHA-256 | 4fcf434e418ec4b78b4c2d63832210327781ed08e528c125015656abfd99f10d
Microsoft DirectWrite / AFDKO OpenType Out-Of-Bounds Read / Write
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a heap-baeed out-of-bounds read/write vulnerability in OpenType font handling due to empty ROS strings.

tags | exploit
advisories | CVE-2019-1124
SHA-256 | 776e4d5cb07c5edc399a8c06b2c8fe7a2cb08c78b74a62a84252a02d5708c119
Microsoft DirectWrite / AFDKO dnaGrow Insufficient Integer Overflow Check
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from having an insufficient integer overflow check in dnaGrow.

tags | advisory, overflow
SHA-256 | 51c785aaeac307b6f004977e9dda66854c854edace9664c3df8a5c5e0aa2a972
Microsoft DirectWrite / AFDKO OpenType Out-Of-Bounds Read
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from an out-of-bounds read vulnerability in OpenType font handling due to undefined FontName index.

tags | exploit
SHA-256 | e3e7b0305f8432ddd997bdec2f0d5cacd36f1c9f6a99150af8de8f307cea29f4
Microsoft DirectWrite / AFDKO OpenType Post Table Bugs
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from multiple bugs in OpenType font handling related to the "post" table.

tags | exploit
SHA-256 | 6354ddf2c2a84f87b95ff67efeff3f139b9cc0c1d499d184289892fb322d4120
Microsoft DirectWrite / AFDKO OpenType NULL Pointer Dereference
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a NULL pointer dereferences vulnerability in OpenType font handling while accessing empty dynarrays.

tags | exploit
SHA-256 | 4ec1a9e1b55b066d5ae525c5cd2a521b59c106b8837891bac4d6224817cffbca
Microsoft DirectWrite / AFDKO OpenType Read Of Uninitialized Memory
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from allowing a read of uninitialized BuildCharArray memory in OpenType font handling.

tags | advisory
SHA-256 | 6bd13a875e56d5d9ee6b4e88a96b9bfc00297a1df5f42b95b9960166caf6299b
Microsoft DirectWrite / AFDKO OpenType readEncoding Buffer Overflow
Posted Jul 11, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a heap-based buffer overflow vulnerability in OpenType font handling in readEncoding.

tags | exploit, overflow
SHA-256 | 18da01543383d44711f3953c7c081e706b908f64132617f3f3e209a9d3f3d24b
Microsoft DirectWrite / AFDKO OpenType readCharset Buffer Overflow
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a heap-based buffer overflow vulnerability in OpenType font handling in readCharset.

tags | exploit, overflow
advisories | CVE-2019-1128
SHA-256 | a9d786e193b92f19f2203e1c4c4a184d6088e7ac59d89e26d75a0de326d918b1
Microsoft DirectWrite / AFDKO OpenType Out-Of-Bounds Read / Write
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a heap-based out-of-bounds read/write vulnerability in OpenType font handling due to unbounded iFD.

tags | exploit
advisories | CVE-2019-1121
SHA-256 | e74d7eca66fac35dabca0f0b4ab4a2d55f72889c670a0b7f8bf2ff79eed66baa
Microsoft DirectWrite / AFDKO Uninitialized Memory Use
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from an issue where it makes use of uninitialized memory while freeing resources in var_loadavar.

tags | exploit
SHA-256 | 5a7a6f30beafa844977ce32830f5b3436dfda461f17af14e426ffbfca386c979
Microsoft DirectWrite / AFDKO do_set_weight_vector_cube Buffer Overflow
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a stack-based buffer overflow vulnerability in do_set_weight_vector_cube for large nAxes.

tags | exploit, overflow
SHA-256 | 87a891d20df4c6c1cf489ae7aea464da6ea68dc962c56e93de1a2aaa3bed36e3
Microsoft DirectWrite / AFDKO OpenType Stack Corruption Due To Negative nAxes
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a stack corruption vulnerability in OpenType font handling due to negative nAxes.

tags | exploit
advisories | CVE-2019-1127
SHA-256 | 0b18f867565f67bca980d7fc0ababb77f4d56781f8ff941b85c87c7f67cac560
Microsoft DirectWrite / AFDKO OpenType Stack Corruption Due To Negative cubeStackDepth
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a stack corruption vulnerability in OpenType font handling due to negative cubeStackDepth.

tags | exploit
advisories | CVE-2019-1118
SHA-256 | 151943d6fedcadaa27f44c6659dd65a5bae0b90b376bb58c73d25d660f26876e
Microsoft DirectWrite / AFDKO OpenType Stack Corruption Due To Out-Of-Bounds cubeStackDepth
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a stack corruption vulnerability in OpenType font handling due to out-of-bounds cubeStackDepth.

tags | exploit
advisories | CVE-2019-1117
SHA-256 | 433ecac33a84ccd0549ea6aa46ccdf5bf0f3c6881fa170ad87339fd144605d9b
Microsoft DirectWrite / AFDKO readTTCDirectory Integer Overflow
Posted Jul 10, 2019
Authored by Google Security Research, mjurczyk

Microsoft DirectWrite / AFDKO suffers from a heap-based buffer overflow vulnerability due to integer overflow in readTTCDirectory.

tags | exploit, overflow
SHA-256 | 7e129e9a0001c1d4d6ccb6395d7cf5e1b831314a52c02a49a35d93d927795db4
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