Command Injection in Tencent WeChat

1) Command Injection

EUVDB-ID: #VU23858

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17151

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to a lack of input validation within the parsing of a usernames . A remote attacker who is within a chat session together with the victim can execute arbitrary code in the context of the current process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WeChat: 7.0.0 - 7.0.7

External links

http://www.zerodayinitiative.com/advisories/ZDI-19-1035/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.