Vulnerability Change Records for CVE-2020-27874

Change History

CVE Modified by Zero Day Initiative 3/12/2021 9:15:14 AM

Action Type Old Value New Value
Changed Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580.

Initial Analysis 2/16/2021 2:26:38 PM

Action Type Old Value New Value
Added CPE Configuration

								
							
							
						
OR
     *cpe:2.3:a:tencent:wechat:7.0.18:*:*:*:*:android:*:*
Added CVSS V2

								
							
							
						
NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added CVSS V2 Metadata

								
							
							
						
Victim must voluntarily interact with attack mechanism
Added CVSS V3.1

								
							
							
						
NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Added CWE

								
							
							
						
NIST CWE-119
Changed Reference Type
https://www.zerodayinitiative.com/advisories/ZDI-21-084/ No Types Assigned
https://www.zerodayinitiative.com/advisories/ZDI-21-084/ Third Party Advisory, VDB Entry

CVE Modified by Zero Day Initiative 3/12/2021 10:15:14 AM

Action Type Old Value New Value
Changed Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the WXAM Decoder. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-11580.

Modified Analysis 3/26/2021 10:56:08 AM

Action Type Old Value New Value