CVE - CVE-2020-15213

CVE-ID
CVE-2020-15213	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In TensorFlow Lite before versions 2.2.1 and 2.3.1, models using segment sum can trigger a denial of service by causing an out of memory allocation in the implementation of segment sum. Since code uses the last element of the tensor holding them to determine the dimensionality of output tensor, attackers can use a very large value to trigger a large allocation. The issue is patched in commit 204945b19e44b57906c9344c0d00120eeeae178a and is released in TensorFlow versions 2.2.1, or 2.3.1. A potential workaround would be to add a custom `Verifier` to limit the maximum value in the segment ids tensor. This only handles the case when the segment ids are stored statically in the model, but a similar validation could be done if the segment ids are generated at runtime, between inference steps. However, if the segment ids are generated as outputs of a tensor during inference steps, then there are no possible workaround and users are advised to upgrade to patched code.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hjmq-236j-8m87 URL:https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hjmq-236j-8m87 MISC:https://github.com/tensorflow/tensorflow/commit/204945b19e44b57906c9344c0d00120eeeae178a URL:https://github.com/tensorflow/tensorflow/commit/204945b19e44b57906c9344c0d00120eeeae178a MISC:https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1 URL:https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20200625	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20200625)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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