CVE-2020-15194

Description

In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `SparseFillEmptyRowsGrad` implementation has incomplete validation of the shapes of its arguments. Although `reverse_index_map_t` and `grad_values_t` are accessed in a similar pattern, only `reverse_index_map_t` is validated to be of proper shape. Hence, malicious users can pass a bad `grad_values_t` to trigger an assertion failure in `vec`, causing denial of service in serving installations. 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."

How to fix CVE-2020-15194

To remediate CVE-2020-15194, upgrade the affected package to a fixed version below.

—upgrade to 1.15.4 or later
—upgrade to 1.15.4 or later
—upgrade to 390611e0d45c5793c7066110af37c8514e6a6c54 or later
—upgrade to 390611e0d45c5793c7066110af37c8514e6a6c54 or later
—upgrade to 1.15.4 or later
—upgrade to 390611e0d45c5793c7066110af37c8514e6a6c54 or later
—upgrade to 1.15.4 or later

Is CVE-2020-15194 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (7)

from 0, < 1.15.4, >= 2.0.0, < 2.0.3, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.1, >= 2.3.0, < 2.3.1
from 0, < 1.15.4
from 0, < 390611e0d45c5793c7066110af37c8514e6a6c54 | from 0, < 1.15.4, >= 2.0.0, < 2.0.3, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.1, >= 2.3.0, < 2.3.1
from 0, < 390611e0d45c5793c7066110af37c8514e6a6c54 | from 0, < 1.15.4, >= 2.0.0, < 2.0.3, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.1, >= 2.3.0, < 2.3.1
from 0, < 1.15.4
from 0, < 390611e0d45c5793c7066110af37c8514e6a6c54 | from 0, < 1.15.4, >= 2.0.0, < 2.0.3, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.1, >= 2.3.0, < 2.3.1
from 0, < 1.15.4

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
osv	CVSS 3.1	MEDIUM5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L