CVE-2020-15205

Description

In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `data_splits` argument of `tf.raw_ops.StringNGrams` lacks validation. This allows a user to pass values that can cause heap overflow errors and even leak contents of memory In the linked code snippet, all the binary strings after `ee ff` are contents from the memory stack. Since these can contain return addresses, this data leak can be used to defeat ASLR. The issue is patched in commit 0462de5b544ed4731aa2fb23946ac22c01856b80, 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-2020-15205

To remediate CVE-2020-15205, 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 0462de5b544ed4731aa2fb23946ac22c01856b80 or later
—upgrade to 0462de5b544ed4731aa2fb23946ac22c01856b80 or later
—upgrade to 1.15.4 or later
—upgrade to 0462de5b544ed4731aa2fb23946ac22c01856b80 or later
—upgrade to 1.15.4 or later

Is CVE-2020-15205 being exploited?

Low — EPSS is 0.5%, 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, < 0462de5b544ed4731aa2fb23946ac22c01856b80 | 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, < 0462de5b544ed4731aa2fb23946ac22c01856b80 | 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, < 0462de5b544ed4731aa2fb23946ac22c01856b80 | 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:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
osv	CVSS 3.1	CRITICAL9.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H