CVE-2021-27710

Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, "ip" parameter is directly passed to the attacker, allowing them to control the "ip" field to attack the OS.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

7.90% chance of exploitation in the next 30 days, 94th percentile

Published

2021-04-14

Updated

2024-08-03

Proof-of-concept exploits (2)

• https://hackmd.io/Hy3oVgtcQiuqAtv9FdylHw
• https://hackmd.io/KjXzQdjDRjOuRjoZZXQo_A

References

• CVE Record
• NVD entry

Related

• CVE-2021-27708
• CVE-2021-27722
• CVE-2021-27707
• CVE-2021-27799
• CVE-2021-27706
• CVE-2021-27815