CVE-2021-45039
Multiple models of the Uniview IP Camera (e.g., IPC_G6103 B6103.16.10.B25.201218, IPC_G61, IPC21, IPC23, IPC32, IPC36, IPC62, and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Multiple models of the Uniview IP Camera (e.g., IPC_G6103 B6103.16.10.B25.201218, IPC_G61, IPC21, IPC23, IPC32, IPC36, IPC62, and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an internal buffer and achieve code execution. By using this buffer overflow, a remote attacker can start the telnetd service. This service has a hardcoded default username and password (root/123456). Although it has a restrictive shell, this can be easily bypassed via the built-in ECHO shell command.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.23% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- uniview/camera firmware
- Source
- cve@mitre.org
References
- https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/Exploit, Third Party Advisory
- https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htmVendor Advisory
- https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/Exploit, Third Party Advisory
- https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htmVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.