CVE-2021-45836 — HIGH (8.8)

Vulnerability Description

An authenticated attacker can execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by injecting a maliciously crafted input in the request through /tos/index.php?app/hand_app.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Terra-Master	Tos	4.2.15-2107141517
Terra-Master	F2-210	-
Terra-Master	F4-210	-

References

https://thatsn0tmy.site/posts/2021/12/how-to-summon-rces/ExploitThird Party Advisory
https://thatsn0tmy.site/posts/2021/12/how-to-summon-rces/ExploitThird Party Advisory

FAQ

What is CVE-2021-45836?

CVE-2021-45836 is a vulnerability with a CVSS score of 8.8 (HIGH). An authenticated attacker can execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by injecting a maliciously crafted input in the request through /tos/index....

How severe is CVE-2021-45836?

CVE-2021-45836 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-45836?

Check the references section above for vendor advisories and patch information. Affected products include: Terra-Master Tos, Terra-Master F2-210, Terra-Master F4-210.