Heap-based Buffer Overflow Affecting gpac4ios Open this link in a new tab package, versions >=0.0.0


0.0
high
  • Attack Complexity

    Low

  • Availability

    High

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  • snyk-id

    SNYK-COCOAPODS-GPAC4IOS-1567333

  • published

    19 Aug 2021

  • disclosed

    19 Aug 2021

  • credit

    Cisco Talos

How to fix?

There is no fixed version for GPAC4iOS.

Overview

GPAC4iOS is a GPAC4iOS is the libgpac library packaged for iOS as a Pod. It is preconfigured and tested to do a single task: create a MP4 file from a raw H.264 and an audio track.

Affected versions of this package are vulnerable to Heap-based Buffer Overflow. When reading each sub-segment, at line 40 the library will first read a 32-bit integer representing the number of ranges. These ranges are then checked against the size of the atom. Due to the size being 64-bit, this check is insufficient. After validating the number of ranges, at line 4] the library will multiply the count by the size of the GF_SubsegmentRangeInfo structure. On a 32-bit platform, this multiplication can result in an integer overflow causing the space of the array being allocated to be less than expected. During the initialization of this array at line 42, the library will write outside the bounds of the allocation resulting in a heap-based buffer overflow.