title: Heap buffer overflow in Tensorflow
description: In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the implementation of `SparseFillEmptyRowsGrad` uses a double indexing pattern. It is possible for `reverse_index_map(i)` to be an index outside of bounds of `grad_values`, thus resulting in a heap buffer overflow. The issue is patched in commit 390611e0d45c5793c7066110af37c8514e6a6c54, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
problem types: {"CWE-119":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}
affected:
{
product: tensorflow
vendor: tensorflow
versions:
status: affected, version: < 1.15.4
status: affected, version: >= 2.0.0, < 2.0.3
status: affected, version: >= 2.1.0, < 2.1.2
status: affected, version: >= 2.2.0, < 2.2.1
status: affected, version: >= 2.3.0, < 2.3.1
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
version: 3.1
]