Vulnerability identifier: #VU49328

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26270

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
TensorFlow
Server applications / Other server solutions

Vendor: TensorFlow

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation when processing an input with zero-length within the the LSTM/GRU layer. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

The vulnerability affects TensorFlow running an LSTM/GRU model.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TensorFlow: 2.0.0 - 2.0.3, 2.2.0 - 2.2.1, 2.3.0 - 2.3.1, 2.1.0 - 2.1.2, 1.15.0 - 1.15.4, 1.14.0, 1.13.1 - 1.13.2, 1.12.0 - 1.12.3, 1.11.0, 1.10.0 - 1.10.1, 1.9.0, 1.8.0, 1.7.0 - 1.7.1, 1.6.0, 1.5.0 - 1.5.1, 1.4.0 - 1.4.1, 1.3.0 - 1.3.1, 1.2.0 - 1.2.1, 1.1.0, 1.0.0 - 1.0.1

---

External links
http://github.com/tensorflow/tensorflow/commit/14755416e364f17fb1870882fa778c7fec7f16e3
http://github.com/tensorflow/tensorflow/security/advisories/GHSA-m648-33qf-v3gp
http://github.com/tensorflow/tensorflow/releases/tag/v2.3.2
http://github.com/tensorflow/tensorflow/releases/tag/v2.2.2
http://github.com/tensorflow/tensorflow/releases/tag/v2.1.3
http://github.com/tensorflow/tensorflow/releases/tag/v2.0.4
http://github.com/tensorflow/tensorflow/releases/tag/v1.15.5

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.