CVE-2020-26269

Heap out of bounds read in filesystem glob matching in TensorFlow

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In TensorFlow release candidate versions 2.4.0rc*, the general implementation for matching filesystem paths to globbing pattern is vulnerable to an access out of bounds of the array holding the directories. There are multiple invariants and preconditions that are assumed by the parallel implementation of GetMatchingPaths but are not verified by the PRs introducing it (#40861 and #44310). Thus, we are completely rewriting the implementation to fully specify and validate these. This is patched in version 2.4.0. This issue only impacts master branch and the release candidates for TF version 2.4. The final release of the 2.4 release will be patched.

En las versiones candidatas a lanzamiento de TensorFlow 2.4.0rc*, la implementación general para hacer coincidir las rutas del sistema de archivos con el patrón globbing es vulnerable a un acceso fuera de límites de la matriz que contiene los directorios. Existen múltiples invariantes y condiciones previas que son asumidas por la implementación paralela de GetMatchingPaths pero no son verificadas por los RP que lo presentan (#40861 y #44310). Por lo tanto, estamos reescribiendo completamente la implementación para especificarlos y validarlos completamente. Esto está parcheado en la versión 2.4.0. Este problema solo afecta a la rama maestra y a los candidatas de lanzamiento para TF versión 2.4. La versión final de la versión 2.4 será parcheada.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-01 CVE Reserved
2020-12-10 CVE Published
2023-07-17 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-9jjw-hf72-3mxw	2024-08-04

URL	Date	SRC
https://github.com/tensorflow/tensorflow/commit/8b5b9dc96666a3a5d27fad7179ff215e3b74b67c	2021-08-17

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				2.4.0 Search vendor "Google" for product "Tensorflow" and version "2.4.0"		rc0		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				2.4.0 Search vendor "Google" for product "Tensorflow" and version "2.4.0"		rc1		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				2.4.0 Search vendor "Google" for product "Tensorflow" and version "2.4.0"		rc2		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				2.4.0 Search vendor "Google" for product "Tensorflow" and version "2.4.0"		rc3		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				2.4.0 Search vendor "Google" for product "Tensorflow" and version "2.4.0"		rc4		Affected