CVE-2019-12937

HIGH

ToaruOS < 1.10.9 - Local Privilege Escalation via gsudo DISPLAY Environment Variable

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-12937. PoCs published by AkashicYiTai.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2019-12937, a buffer overflow vulnerability in ToaruOS's gsudo program. The exploit leverages the DISPLAY environment variable to trigger a stack overflow in the pex_connect function, allowing privilege escalation to root due to the SUID bit set on gsudo.

Description

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 DISPLAY environment variable.

Exploits (1)

nomisec WORKING POC

by AkashicYiTai · poc

https://github.com/AkashicYiTai/CVE-2019-12937-ToaruOS

View Code ZIP pw:eip

This repository contains a functional exploit for CVE-2019-12937, a buffer overflow vulnerability in ToaruOS's gsudo program. The exploit leverages the DISPLAY environment variable to trigger a stack overflow in the pex_connect function, allowing privilege escalation to root due to the SUID bit set on gsudo.

Classification

Working Poc 100%

Attack Type

Lpe

Complexity

Moderate

Reliability

Reliable

Target: ToaruOS 1.10.9 and earlier

No auth needed

Prerequisites: Access to a vulnerable ToaruOS system · Ability to compile and execute the PoC

MITRE ATT&CK

T1068 - Exploitation for Privilege Escalation T1548.001 - Setuid and Setgid

devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-gsudo.c

View Exploit ZIP pw:eip

Scores

CVSS v3 7.8

EPSS 0.0050

EPSS Percentile 39.2%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-787

Status published

Products (1)

toaruos_project/toaruos < 1.10.9

Published Jun 23, 2019

Tracked Since Feb 18, 2026