Adobe Acrobat Reader PDF File memory corruption

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
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in Adobe Acrobat Reader up to 2017.011.30188/2020.001.30018/2020.013.20074. It has been classified as critical. This affects an unknown part of the component PDF File Handler. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2021-21063. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe Acrobat Reader up to 2017.011.30188/2020.001.30018/2020.013.20074 (Document Reader Software) and classified as critical. This issue affects an unknown code block of the component PDF File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was presented 02/12/2021. The advisory is shared at helpx.adobe.com. The identification of this vulnerability is CVE-2021-21063. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/28/2021).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: 🔍

Timelineinfo

12/18/2020 🔍
02/12/2021 +56 days 🔍
02/12/2021 +0 days 🔍
02/28/2021 +16 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: helpx.adobe.com
Status: Confirmed

CVE: CVE-2021-21063 (🔍)
GCVE (CVE): GCVE-0-2021-21063
GCVE (VulDB): GCVE-100-169853

Entryinfo

Created: 02/12/2021 12:00
Updated: 02/28/2021 20:44
Changes: 02/12/2021 12:00 (38), 02/28/2021 20:41 (5), 02/28/2021 20:44 (8)
Complete: 🔍
Cache ID: 216::103

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