Privilege escalation in Kingsoft Antivirus and Internet Security



Published: 2020-10-20
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-119
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Internet Security
Client/Desktop applications / Antivirus software/Personal firewalls

Kingsoft Antivirus
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor Kingsoft Corp.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU47733

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: N/A

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the target system.

The vulnerability exists due to a boundary error when processing IOCTL 0x80030004 or 0x80030008 by the KWatch3.sys (internet security) kernel driver. A local user can trigger memory corruption and execute arbitrary code on the target system with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Internet Security: All versions

Kingsoft Antivirus: All versions

External links

http://srcincite.io/pocs/src-2017-0029.py.txt


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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