Adobe Acrobat Reader up to 21.8.0 on Android 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.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Adobe Acrobat Reader up to 21.8.0 on Android and classified as critical. Affected by this issue is some unknown functionality. The manipulation results in path traversal. This vulnerability is reported as CVE-2021-40724. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Adobe Acrobat Reader up to 21.8.0 on Android (Document Reader Software). Affected is an unknown code. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 10/15/2021 as apsb21-89. The advisory is available at helpx.adobe.com. This vulnerability is traded as CVE-2021-40724 since 09/08/2021. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/15/2021). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Document Reader Software

Vendor

Adobe

Name

Acrobat Reader

Version

License

free

Website

Vendor: https://www.adobe.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

CNA Base Score: 7.8
CNA Vector (Adobe Systems Incorporated): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
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: 🔍

Timelineinfo

09/08/2021 🔍
10/15/2021 +37 days 🔍
10/15/2021 +0 days 🔍
10/22/2021 +7 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: apsb21-89
Status: Confirmed

CVE: CVE-2021-40724 (🔍)
GCVE (CVE): GCVE-0-2021-40724
GCVE (VulDB): GCVE-100-184482
scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 10/15/2021 19:03
Updated: 10/22/2021 08:27
Changes: 10/15/2021 19:03 (50), 10/22/2021 08:27 (1)
Complete: 🔍
Cache ID: 216::103