Privilege escalation in TP-Link TL-WA855RE



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-10916
CWE-ID CWE-264
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 TL-WA855RE
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor TP-Link

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU27462

Risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-10916

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists in "login.json" due to the lack of proper validation on first-time setup requests. A remote authenticated attacker on the local network can reset the password for the Admin account and execute arbitrary code in the context of the device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TL-WA855RE: before V4_200403

CPE2.3 External links

https://www.zerodayinitiative.com/advisories/ZDI-20-553/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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