VULNERABILITY DETAILS
global-buffer-overflow pdfium.

VERSION
Operating System:Ubuntu 14.04 LTS

!IMPORTANT
Pdfium crashed on debug build with asan=1, pulled through gsync on : Apr 10 17:50 .
Everything was build with ninja.

REPRODUCTION CASE

Asan info :
=================================================================
==17322==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000004efea4b at pc 0x000001434518 bp 0x7fffc31280f0 sp 0x7fffc31280e8
READ of size 1 at 0x000004efea4b thread T0
    #0 0x1434517 in RenderGlyph /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp:1572:21
    #1 0x1433af2 in LookUpGlyphBitmap /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp:1305:35
    #2 0x142ce55 in LoadGlyphBitmap /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp:1361:10
    #3 0x1415f46 in DrawNormalText /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp:306:24
    #4 0xa99bc8 in DrawNormalText /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render_text.cpp:727:10
    #5 0xa93836 in ProcessText /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render_text.cpp:319:10
    #6 0x9ed16d in ProcessObjectNoClip /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render.cpp:396:14
    #7 0x9ee7f4 in ContinueSingleObject /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render.cpp:339:3
    #8 0x9fec32 in Continue /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render.cpp:1103:13
    #9 0x9fce81 in Start /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/core/fpdfapi/fpdf_render/fpdf_render.cpp:1064:3
    #10 0x52dd5c in FPDF_RenderPage_Retail /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/fpdfsdk/fpdfview.cpp:935:3
    #11 0x52c75f in FPDF_RenderPageBitmap /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/fpdfsdk/fpdfview.cpp:668:3
    #12 0x4ebf7d in RenderPage /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/samples/pdfium_test.cc:448:3
    #13 0x4ef217 in RenderPdf /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/samples/pdfium_test.cc:626:9
    #14 0x4f0a52 in main /home/mtowalski/chromium/src/out/Debug/../../third_party/pdfium/samples/pdfium_test.cc:748:7
    #15 0x7f9a73894ec4 in __libc_start_main /build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:287:0

0x000004efea4b is located 21 bytes to the left of global variable '' defined in '../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp' (0x4efea60) of size 53
  '' is ascii string '../../third_party/pdfium/core/fxge/ge/fx_ge_text.cpp'
0x000004efea4b is located 42 bytes to the right of global variable '<string literal>' defined in '../../third_party/pdfium/core/fxcrt/include/fx_string.h:172:71' (0x4efea20) of size 1
  '<string literal>' is ascii string ''
SUMMARY: AddressSanitizer: global-buffer-overflow (/home/mtowalski/chromium/src/out/Debug/pdfium_test+0x1434517)
Shadow bytes around the buggy address:
  0x0000809d7cf0: f9 f9 f9 f9 00 03 f9 f9 f9 f9 f9 f9 00 00 00 00
  0x0000809d7d00: 00 00 05 f9 f9 f9 f9 f9 00 00 00 00 00 07 f9 f9
  0x0000809d7d10: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 05 f9
  0x0000809d7d20: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 03 f9 f9
  0x0000809d7d30: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 f9
=>0x0000809d7d40: f9 f9 f9 f9 01 f9 f9 f9 f9[f9]f9 f9 00 00 00 00
  0x0000809d7d50: 00 00 05 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
  0x0000809d7d60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000809d7d70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000809d7d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000809d7d90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==17322==ABORTING

 

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