VDB-176858 · CVE-2021-24035 · GCVE-0-2021-24035

Facebook WhatsApp/WhatsApp Business 2.20.61/2.20.100/2.20.111/2.21.4.18 on Android Filename Validation path traversal

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Facebook WhatsApp and WhatsApp Business on Android. Affected by this vulnerability is an unknown functionality of the component Filename Validation. Such manipulation leads to path traversal. This vulnerability is listed as CVE-2021-24035. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Facebook WhatsApp and WhatsApp Business on Android (Social Network Software). It has been rated as critical. Affected by this issue is an unknown part of the component Filename Validation. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality, integrity, and availability.

The weakness was presented 06/11/2021. The advisory is available at whatsapp.com. This vulnerability is handled as CVE-2021-24035. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 2.21.8.13 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Social Network Software

Vendor

Facebook

Name

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-23 / CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WhatsApp/WhatsApp Business 2.21.8.13

Timelineinfo

01/13/2021 🔍
06/11/2021 +148 days 🔍
06/11/2021 +0 days 🔍
09/03/2025 +1545 days 🔍

Sourcesinfo

Advisory: whatsapp.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-24035 (🔍)
GCVE (CVE): GCVE-0-2021-24035
GCVE (VulDB): GCVE-100-176858
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 06/11/2021 13:49
Updated: 09/03/2025 20:11
Changes: 06/11/2021 13:49 (39), 06/13/2021 15:05 (6), 09/03/2025 20:11 (34)
Complete: 🔍
Cache ID: 216::103