CVE-2021-36710 — HIGH (8.8)

Vulnerability Description

ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escalate to CPL 0.

CVSS Score

8.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Toaruos	Toaruos	1.99.2

Related Weaknesses (CWE)

CWE-668

References

https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikesExploitThird Party Advisory
https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikesExploitThird Party Advisory

FAQ

What is CVE-2021-36710?

CVE-2021-36710 is a vulnerability with a CVSS score of 8.8 (HIGH). ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escal...

How severe is CVE-2021-36710?

CVE-2021-36710 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-2021-36710?

Check the references section above for vendor advisories and patch information. Affected products include: Toaruos Toaruos.