CVE-2021-3740: chatwoot Session Fixation — Fix

Description

A Session Fixation vulnerability exists in chatwoot/chatwoot versions prior to 2.4.0. The application does not invalidate existing sessions on other devices when a user changes their password, allowing old sessions to persist. This can lead to unauthorized access if an attacker has obtained a session token.

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CVSS v3.1 Score

6.8

MEDIUM

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

Weakness Type (CWE)

CWE-384 CWE-384

Affected Products

Vendor	Product	Versions
chatwoot	chatwoot	< 2.4.0

References

Advisories & Patches

https://github.com/chatwoot/chatwoot/commit/6fdd4a29969be8423f31890b807d27d13627c50c

Other References

https://huntr.com/bounties/1625470476437-chatwoot/chatwoot

Frequently Asked Questions

What is CVE-2021-3740? +

A Session Fixation vulnerability exists in chatwoot/chatwoot versions prior to 2.4.0. The application does not invalidate existing sessions on other devices when a user changes their password, allowing old sessions to persist. This can lead to unauthorized access if an attacker has obtained a session token. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2021-3740? +

CVE-2021-3740 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2021-3740? +

CVE-2021-3740 affects products from chatwoot, specifically: chatwoot. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2021-3740? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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