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devongovett / exif-reader

A small EXIF image metadata reader
MIT License
152 stars 22 forks source link

Add range checks #5

Closed papandreou closed 5 years ago

papandreou commented 8 years ago

Prevents all sorts of breakage when attempting to parse invalid or corrupt input.

papandreou commented 7 years ago

@devongovett, ping?

rexxars commented 7 years ago

I have an image that crashes node due to out of memory error when using this library to parse its EXIF data. This PR fixes that. 

<--- Last few GCs --->

[1902:0x290d990]     1947 ms: Mark-sweep 579.8 (585.3) -> 578.2 (585.3) MB, 113.4 / 0.0 ms  allocation failure GC in old space requested
[1902:0x290d990]     2058 ms: Mark-sweep 578.2 (585.3) -> 578.1 (585.3) MB, 110.9 / 0.0 ms  allocation failure GC in old space requested
[1902:0x290d990]     2171 ms: Mark-sweep 578.1 (585.3) -> 578.1 (582.3) MB, 113.0 / 0.0 ms  last resort 
[1902:0x290d990]     2285 ms: Mark-sweep 578.1 (582.3) -> 578.1 (582.3) MB, 113.9 / 0.0 ms  last resort 

<--- JS stacktrace --->

==== JS stack trace =========================================

Security context: 0x17eb3499ba79 <JS Object>
    2: readTag [node_modules/exif-reader/index.js:~73] [pc=0x3c3385628136](this=0xf700c30a1c1 <JS Global Object>,buffer=0x224771009bf1 <an Uint8Array with map 0x3a70d19d3879>,offset=160,bigEndian=0x17eb349822c1 <true>)
    3: readTags [node_modules/exif-reader/index.js:59] [pc=0x3c3385622341](this=0xf700c30a1c1 <JS Global Object>,b...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
 1: node::Abort() [node]
 2: 0x13647ec [node]
 3: v8::Utils::ReportOOMFailure(char const*, bool) [node]
 4: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [node]
 5: v8::internal::Factory::NewUninitializedFixedArray(int) [node]
 6: 0xe90ca3 [node]
 7: v8::internal::Runtime_GrowArrayElements(int, v8::internal::Object**, v8::internal::Isolate*) [node]
 8: 0x3c33854840bd
Aborted
papandreou commented 7 years ago

While we're waiting Priyank Parashar has published his fork as exif-reader-paras20xx with this fix in it.

lovell commented 5 years ago

@papandreou Tak!