ID CVE-2021-37687
Summary TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`GatherNd` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124) does not support negative indices but there are no checks for this situation. Hence, an attacker can read arbitrary data from the heap by carefully crafting a model with negative values in `indices`. Similar issue exists in [`Gather` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc). We have patched the issue in GitHub commits bb6a0383ed553c286f87ca88c207f6774d5c4a8f and eb921122119a6b6e470ee98b89e65d721663179d. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
References
Vulnerable Configurations
  • cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:-:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc0:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc1:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.0:rc2:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.1:*:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:-:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:-:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:-:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:-:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc0:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc1:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc2:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:lite:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc3:*:*:lite:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc4:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc4:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.0:rc4:*:*:-:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.0:rc4:*:*:-:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:*
CVSS
Base: 2.1 (as of 18-08-2021 - 21:18)
Impact:
Exploitability:
CWE CWE-125
CAPEC
  • Infiltration of Hardware Development Environment
    An attacker, leveraging the ability to manipulate components of primary support systems and tools within the development and production environments, inserts malicious software within the hardware and/or firmware development environment. The infiltration purpose is to alter developed hardware components in a system destined for deployment at the victim's organization, for the purpose of disruption or further compromise.
  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
cvss-vector via4 AV:L/AC:L/Au:N/C:P/I:N/A:N
Last major update 18-08-2021 - 21:18
Published 12-08-2021 - 23:15
Last modified 18-08-2021 - 21:18
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