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 (≈)
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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.
7.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Adobe Acrobat Reader up to 2015.006.30498/2017.011.30143/2019.012.20035. This vulnerability affects unknown code. The manipulation results in use after free. This vulnerability is known as CVE-2019-8257. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Adobe Acrobat Reader up to 2015.006.30498/2017.011.30143/2019.012.20035 (Document Reader Software). It has been classified as critical. Affected is an unknown part. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Adobe Acrobat and Reader versions , 2019.012.20035 and earlier, 2019.012.20035 and earlier, 2017.011.30142 and earlier, 2017.011.30143 and earlier, 2017.011.30142 and earlier, 2015.006.30497 and earlier, and 2015.006.30498 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution .

The weakness was published 08/13/2019 as APSB19-41 as confirmed security bulletin (Website). The advisory is shared for download at helpx.adobe.com. This vulnerability is traded as CVE-2019-8257 since 02/12/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/28/2020).

Upgrading to version 2015.006.30499, 2017.011.30144 or 2019.012.20036 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Similar entries are available at VDB-140151, VDB-140152, VDB-140153 and VDB-140154. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Acrobat Reader 2015.006.30499/2017.011.30144/2019.012.20036

Timelineinfo

02/12/2019 🔍
08/13/2019 +182 days 🔍
08/13/2019 +0 days 🔍
01/28/2020 +168 days 🔍
01/28/2020 +0 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: APSB19-41
Status: Confirmed

CVE: CVE-2019-8257 (🔍)
GCVE (CVE): GCVE-0-2019-8257
GCVE (VulDB): GCVE-100-149460
See also: 🔍

Entryinfo

Created: 01/28/2020 14:42
Updated: 01/28/2020 14:47
Changes: 01/28/2020 14:42 (43), 01/28/2020 14:47 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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