GHSA-246w-56m2-5899

Source

https://github.com/advisories/GHSA-246w-56m2-5899

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-246w-56m2-5899/GHSA-246w-56m2-5899.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-246w-56m2-5899

Aliases

Related

CVE-2021-21332

Published

2021-03-26T19:52:54Z

Modified

2024-09-30T21:24:04.632420Z

Severity

6.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N CVSS Calculator

Summary

Cross-site scripting (XSS) vulnerability in the password reset endpoint

Details

Impact

The password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains.

Patches

This is fixed in #9200.

Workarounds

Depending on the needs and configuration of the homeserver a few options are available:

Password resets can be disabled by delegating email to a third-party service (via the account_threepid_delegates.email setting) or disabling email (by not configuring the email setting).
If the homeserver is not configured to use passwords (via the password_config.enabled setting) then the affected endpoint can be blocked at a reverse proxy:
- /_synapse/client/password_reset/email/submit_token
The password_reset_confirmation.html template can be overridden with a custom template that manually escapes the variables using JInja2's escape filter. See the email.template_dir setting.

Database specific

{
    "nvd_published_at": "2021-03-26T20:15:00Z",
    "cwe_ids": [
        "CWE-79"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-03-26T19:52:12Z"
}

References

Affected packages

PyPI / matrix-synapse

Package

Name: matrix-synapse; View open source insights on deps.dev
Purl: pkg:pypi/matrix-synapse

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.27.0

Affected versions

0.*

0.33.5

0.33.5.1

0.33.6rc1

0.33.6

0.33.7rc1

0.33.7rc2

0.33.7

0.33.8rc2

0.33.8

0.33.9

0.34.0rc1

0.34.0rc2

0.34.0

0.34.0.1

0.34.1.1

0.99.0rc1

0.99.0rc2

0.99.0rc3

0.99.0rc4

0.99.0

0.99.1rc1

0.99.1rc2

0.99.1

0.99.1.1

0.99.2rc1

0.99.2

0.99.3rc1

0.99.3

0.99.3.1

0.99.3.2

0.99.4rc1

0.99.4

0.99.5rc1

0.99.5

0.99.5.1

0.99.5.2

1.*

1.0.0rc1

1.0.0rc2

1.0.0rc3

1.0.0

1.1.0rc1

1.1.0rc2

1.1.0

1.2.0rc1

1.2.0rc2

1.2.0

1.2.1

1.3.0rc1

1.3.0

1.3.1

1.4.0rc1

1.4.0rc2

1.4.0

1.4.1rc1

1.4.1

1.5.0rc1

1.5.0rc2

1.5.0

1.5.1

1.6.0rc1

1.6.0rc2

1.6.0

1.6.1

1.7.0rc1

1.7.0rc2

1.7.0

1.7.1

1.7.2

1.7.3

1.8.0rc1

1.8.0

1.9.0.dev1

1.9.0.dev2

1.9.0rc1

1.9.0

1.9.1

1.10.0rc1

1.10.0rc2

1.10.0rc3

1.10.0rc5

1.10.0

1.10.1

1.11.0rc1

1.11.0

1.11.1

1.12.0rc1

1.12.0

1.12.1rc1

1.12.1

1.12.2

1.12.3

1.12.4rc1

1.12.4

1.13.0rc1

1.13.0rc2

1.13.0rc3

1.13.0

1.14.0rc1

1.14.0rc2

1.14.0

1.15.0rc1

1.15.0

1.15.1

1.15.2

1.16.0rc1

1.16.0rc2

1.16.0

1.16.1

1.17.0rc1

1.17.0

1.18.0rc1

1.18.0rc2

1.18.0

1.19.0rc1

1.19.0

1.19.1rc1

1.19.1

1.19.2

1.19.3

1.20.0rc1

1.20.0rc2

1.20.0rc3

1.20.0rc4

1.20.0rc5

1.20.0

1.20.1

1.21.0rc1

1.21.0rc2

1.21.0rc3

1.21.0

1.21.1

1.21.2

1.22.0rc1

1.22.0rc2

1.22.0

1.22.1

1.23.0rc1

1.23.0

1.23.1

1.24.0rc1

1.24.0rc2

1.24.0

1.25.0rc1

1.25.0

1.26.0rc1

1.26.0rc2

1.26.0

1.27.0rc1

1.27.0rc2