CVE-2018-0491

HIGH

Tor 0.3.2.0-0.3.2.9 - Use-After-Free in KIST Pending List

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-0491. PoCs published by t4rkd3vilz.

AI-analyzed exploit summary This exploit leverages a Use After Free vulnerability in Tor Browser to trigger a Denial of Service (DoS) by manipulating DOM elements and event listeners. The PoC demonstrates the vulnerability by causing a crash through improper handling of frameset elements.

Description

A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST implementation allows a channel to be added more than once in the pending list.

Exploits (1)

exploitdb WORKING POC
by t4rkd3vilz · htmldoslinux
https://www.exploit-db.com/exploits/44994

This exploit leverages a Use After Free vulnerability in Tor Browser to trigger a Denial of Service (DoS) by manipulating DOM elements and event listeners. The PoC demonstrates the vulnerability by causing a crash through improper handling of frameset elements.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Tor Browser 0.3.2.x before 0.3.2.10
No auth needed
Prerequisites: Victim must visit a malicious webpage
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Issue Tracking, Mitigation, Vendor Advisory x_refsource_confirm
https://trac.torproject.org/projects/tor/ticket/24700
Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://trac.torproject.org/projects/tor/ticket/25117
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44994/

Scores

CVSS v3 7.5
EPSS 0.1044
EPSS Percentile 93.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-416
Status published
Products (1)
torproject/tor 0.3.2.0 - 0.3.2.10
Published Mar 05, 2018
Tracked Since Feb 18, 2026