CVE-2021-27247

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Tencent WeChat 2.9.5 desktop version. 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 read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-11907.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-217/	Third Party Advisory VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-217/	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:tencent:wechat:2.9.5:*:*:*:*:-:*:*

History

21 Nov 2024, 05:57

Type	Values Removed	Values Added
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-21-217/ - Third Party Advisory, VDB Entry~~	() https://www.zerodayinitiative.com/advisories/ZDI-21-217/ - Third Party Advisory, VDB Entry

Information

Published : 2021-04-14 16:15

Updated : 2024-11-21 05:57

NVD link : CVE-2021-27247

Mitre link : CVE-2021-27247

CVE.ORG link : CVE-2021-27247

JSON object : View

Products Affected

tencent

wechat

CWE

CWE-125

Out-of-bounds Read

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