CVE-2020-27874 — HIGH (8.8)

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tencent	Wechat	7.0.18

Related Weaknesses (CWE)

CWE-119

References

https://www.zerodayinitiative.com/advisories/ZDI-21-084/Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-084/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2020-27874?

CVE-2020-27874 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 m...

How severe is CVE-2020-27874?

CVE-2020-27874 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-27874?

Check the references section above for vendor advisories and patch information. Affected products include: Tencent Wechat.