CVE-2021-36710
HIGHCVSS 8.8/10EPSS 0.34%
Last modified
CVE-2021-36710 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Toaruos | Toaruos | 1.99.2 |
References
- https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.cExploit, Third Party Advisory
- https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.cExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-36710?
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.
How severe is CVE-2021-36710?
CVE-2021-36710 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36710?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-36710?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST