SSRF in Thinkst Canarytokens

CVE-2024-41664

Canarytokens help track activity and actions on a network. Prior to `sha-8ea5315`, Canarytokens.org was vulnerable to a blind SSRF in the Webhook alert feature. When a Canarytoken is created, users choose to receive alerts either via email or via a webhook. If a webhook is supplied when a Canarytoken is first created, the site will make a test request to the supplied URL to ensure it accepts alert notification HTTP requests. No safety checks were performed on the URL, leading to a Server-Side Request Forgery vulnerability. The SSRF is Blind because the content of the response is not displayed to the creating user; they are simply told whether an error occurred in making the test request. Using the Blind SSRF, it was possible to map out open ports for IPs inside the Canarytokens.org infrastructure. This issue is now patched on Canarytokens.org. Users of self-hosted Canarytokens installations can update by pulling the latest Docker image, or any Docker image after `sha-097d91a`.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2024-41664: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-41664?
CVE-2024-41664 is a medium-severity vulnerability in Thinkst Canarytokens, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2024-07-23.
How severe is CVE-2024-41664?
Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2024-41664 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.