Adobe Acrobat Reader use after free

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.
5.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Adobe Acrobat Reader up to 2017.011.30197/2020.004.30005/2021.005.20054. Affected by this issue is some unknown functionality. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2021-35981. The attack requires local access. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Adobe Acrobat Reader up to 2017.011.30197/2020.004.30005/2021.005.20054 (Document Reader Software). This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 07/13/2021 as APSB21-51. The advisory is available at helpx.adobe.com. This vulnerability was named CVE-2021-35981. The exploitation appears to be easy. Local access is required to approach this attack. The requirement for exploitation is a single authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 2017.011.30199, 2020.004.30006 or 2021.005.20058 eliminates this vulnerability. The upgrade is hosted for download at helpx.adobe.com.

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Acrobat Reader 2017.011.30199/2020.004.30006/2021.005.20058

Timelineinfo

06/30/2021 🔍
07/13/2021 +13 days 🔍
07/13/2021 +0 days 🔍
07/17/2021 +4 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: APSB21-51
Status: Confirmed

CVE: CVE-2021-35981 (🔍)
GCVE (CVE): GCVE-0-2021-35981
GCVE (VulDB): GCVE-100-178498

Entryinfo

Created: 07/13/2021 22:31
Updated: 07/17/2021 08:09
Changes: 07/13/2021 22:31 (34), 07/17/2021 08:09 (8)
Complete: 🔍
Cache ID: 216::103

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

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