Vulnerability in Dedsecinside Torbot
CVE-2023-45813
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.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.008 (52.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Dedsecinside Torbot — versions < 4.0.0
- Torbot_project Torbot
- Validators_project Validators — versions 0.11.0, 0.20.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-45813?
- CVE-2023-45813 is a medium-severity vulnerability in Dedsecinside Torbot, classified under Inefficient Regular Expression Complexity. CVSS score: 4.6/10. Published 2023-10-18.
- How severe is CVE-2023-45813?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2023-45813 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.