CyberSec.Space Logo
Back to CVE Browser

CVE-2021-36710

HIGH
8.8
CVSS Severity Score
EPSS Score0.0670%
EPSS Percentile23.61th
PublishedJun 8, 2022
Last ModifiedNov 21, 2024

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.

Affected Platforms (CPE)

💻
Toaruos

Toaruos

= 1.99.2

References & Advisories

🔗 https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.c
🔗 https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.c

Related Vulnerabilities

CVE-2019-129377.8

apps/gsudo.c in gsudo in ToaruOS through 1.10.9 has a buffer overflow allowing local privilege escalation to the root user via the...

CVE-2019-130467.8

linker/linker.c in ToaruOS through 1.10.9 has insecure LD_LIBRARY_PATH handling in setuid applications.

CVE-2019-130477.8

kernel/sys/syscall.c in ToaruOS through 1.10.9 has incorrect access control in sys_sysfunc case 9 for TOARU_SYS_FUNC_SETHEAP, allo...

CVE-2019-130497.8

An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into userland process space ...