CVE-2021-31245

MEDIUM

openmptcprouter < 0.57.3 - Timing Attack via Password Length Comparison

Title source: llm

Description

omr-admin.py in openmptcprouter-vps-admin 0.57.3 and earlier compares the user provided password with the original password in a length dependent manner, which allows remote attackers to guess the password via a timing attack.

References (4)

Core 4

Core References

Third Party Advisory x_refsource_misc

https://github.com/Ysurac/openmptcprouter-vps-admin

View Writeup ZIP pw:eip

Vendor Advisory x_refsource_misc

https://www.openmptcprouter.com/

Exploit, Patch, Third Party Advisory x_refsource_misc

https://medium.com/d3crypt/timing-attack-on-openmptcprouter-vps-admin-authentication-cve-2021-31245-12dd92303e1

Patch, Third Party Advisory x_refsource_misc

https://github.com/Ysurac/openmptcprouter-vps-admin/commit/a01cbc8c3d3b8bb7720bf3ff234671b4c0e1859c#diff-b89ee68e63302a732d4bde35eb04a205b06f1611147e139642356f173195ab80

View Patch ZIP pw:eip

Scores

CVSS v3 5.9

EPSS 0.0209

EPSS Percentile 79.2%

Attack Vector NETWORK

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

Details

CWE

CWE-287

Status published

Products (1)

openmptcprouter/openmptcprouter < 0.57.3

Published May 06, 2021

Tracked Since Feb 18, 2026