CVE-2023-45813

Public Exploit
Inefficient Regular Expression Complexity in TorBot

Description

Torbot is an open source tor network intelligence tool. In affected versions the `torbot.modules.validators.validate_link function` uses the python-validators URL validation regex. This particular regular expression has an exponential complexity which allows an attacker to cause an application crash using a well-crafted argument. An attacker can use a well-crafted URL argument to exploit the vulnerability in the regular expression and cause a Denial of Service on the system. The validators file has been removed in version 4.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Category

4.6
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.55%
Vendor Advisory github.com
Affected: DedSecInside TorBot
Published at:
Updated at:

References

Link Tags
https://github.com/DedSecInside/TorBot/security/advisories/GHSA-72qw-p7hh-m3ff vendor advisory exploit
https://github.com/DedSecInside/TorBot/commit/ef6e06bc7785355b1701d5524eb4550441086ac4 patch

Frequently Asked Questions

What is the severity of CVE-2023-45813?
CVE-2023-45813 has been scored as a medium severity vulnerability.
How to fix CVE-2023-45813?
To fix CVE-2023-45813, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-45813 being actively exploited in the wild?
It is possible that CVE-2023-45813 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-45813?
CVE-2023-45813 affects DedSecInside TorBot.
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