Description
A vulnerability classified as critical was found in LB-LINK BL-AC1900, BL-AC2100_AZ3, BL-AC3600, BL-AX1800, BL-AX5400P and BL-WR9000 up to 20250702. This vulnerability affects the function bs_GetHostInfo in the library libblinkapi.so of the file /cgi-bin/lighttpd.cgi. The manipulation leads to information disclosure. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| LB-LINK | BL-AC1900 | 20250702 | — |
| LB-LINK | BL-AC2100_AZ3 | 20250702 | — |
| LB-LINK | BL-AC3600 | 20250702 | — |
| LB-LINK | BL-AX1800 | 20250702 | — |
| LB-LINK | BL-AX5400P | 20250702 | — |
| LB-LINK | BL-WR9000 | 20250702 | — |
References
- VDB-316270 | LB-LINK BL-WR9000 lighttpd.cgi bs_GetHostInfo information disclosure vdb-entry technical-description
- VDB-316270 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- Submit #608009 | Blink BL-AX5400P V1.0.19、BL-AX1800 V1.0.19、BL-AC3600 V1.0.22、BL-WR9000 V2.4.9、BL-AC1900 V1.0.2、BL-AC2100_AZ3 V1.0.4 BL-AX5400P V1.0.19、BL-AX1800 V1.0.19、BL-AC3600 V1.0.22、BL-WR9000 V2.4.9、BL-AC1900 V1.0.2、BL-AC2100_AZ3 V1.0.4 Exposur third-party-advisory
- https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Information_Exposure_Vulnerabilities_in_Various_Blink_Router_Models.md related
- https://github.com/waiwai24/0101/blob/main/CVEs/Blink/Information_Exposure_Vulnerabilities_in_Various_Blink_Router_Models.md#poc exploit