Adobe Flash Player up to 21.0.0.242 use after free

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Adobe Flash Player up to 21.0.0.242 and classified as critical. Affected by this issue is some unknown functionality. This manipulation causes use after free. The identification of this vulnerability is CVE-2016-4121. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Adobe Flash Player up to 21.0.0.242 (Multimedia Player Software) and classified as critical. Affected by this vulnerability is an unknown part. 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 summary by CVE is:

Use-after-free vulnerability in Adobe Flash Player before 18.0.0.352 and 19.x through 21.x before 21.0.0.242 on Windows and OS X and before 11.2.202.621 on Linux allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2016-1097, CVE-2016-1106, CVE-2016-1107, CVE-2016-1108, CVE-2016-1109, CVE-2016-1110, CVE-2016-4108, and CVE-2016-4110.

The weakness was shared 06/16/2016 as MS16-083 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is known as CVE-2016-4121 since 04/27/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 91163 (Adobe Flash Player <= 21.0.0.226 Multiple Vulnerabilities (APSB16-15)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 100289 (Microsoft Windows Update for Vulnerabilities in Adobe Flash Player in Internet Explorer (MS16-083)).

Upgrading to version 11.2.202.621, 18.0.0.352 or 21.0.0.242 eliminates this vulnerability. Applying the patch MS16-083 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91163) and SecurityFocus (BID 90797†). The entries VDB-87174, VDB-87233, VDB-87234 and VDB-87235 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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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Nessus ID: 91163
Nessus Name: Adobe Flash Player <= 21.0.0.226 Multiple Vulnerabilities (APSB16-15)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867042
OpenVAS Name: Adobe Flash Player Security Updates( apsa16-02 )-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Flash Player 11.2.202.621/18.0.0.352/21.0.0.242
Patch: MS16-083

Timelineinfo

04/27/2016 🔍
05/12/2016 +15 days 🔍
05/16/2016 +4 days 🔍
05/19/2016 +3 days 🔍
06/16/2016 +28 days 🔍
06/16/2016 +0 days 🔍
06/17/2016 +1 days 🔍
01/27/2019 +954 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: MS16-083
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4121 (🔍)
GCVE (CVE): GCVE-0-2016-4121
GCVE (VulDB): GCVE-100-87979
SecurityFocus: 90797 - RETIRED:Adobe Flash Player and AIR CVE-2016-4121 Unspecified Remote Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 06/17/2016 16:42
Updated: 01/27/2019 16:34
Changes: 06/17/2016 16:42 (76), 01/27/2019 16:34 (6)
Complete: 🔍
Cache ID: 216:B98:103

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