CVE-2020-26257 Denial of service attack via incorrect parameters to federation APIs
MediumCVSS 6.5
EPSS 2.4%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Matrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference "homeserver" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a /send_join, /send_leave, /invite or /exchange_third_party_invite request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via federation_domain_whitelist).
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi matrix-synapse(PyPI) | < 1.23.1 | 1.23.1 |
| pypi matrix-synapse(PyPI) | = 0.33.5 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.5.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.6 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.6rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.7 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.7rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.7rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.8 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.8rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.33.9 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.34.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.34.0.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.34.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.34.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.34.1.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.0rc4 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.1.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.1rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.1rc2 | No fix listed |
Show 175 more
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi matrix-synapse(PyPI) | = 0.99.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.2rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.3.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.3.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.3rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.4 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.4rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.5 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.5.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.5.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 0.99.5rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.0.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.0.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.0.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.0.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.1.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.1.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.1.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.0rc5 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.10.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.11.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.11.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.11.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.1rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.4 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.12.4rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.13.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.13.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.13.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.13.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.14.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.14.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.14.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.15.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.15.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.15.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.15.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.16.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.16.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.16.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.16.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.17.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.17.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.18.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.18.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.18.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.1rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.19.3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.2.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.2.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.2.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.2.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0rc4 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.0rc5 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.20.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.0rc3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.21.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.22.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.22.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.22.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.22.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.23.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.23.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.3.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.3.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.3.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.4.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.4.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.4.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.4.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.4.1rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.5.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.5.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.5.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.5.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.6.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.6.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.6.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.6.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.0rc2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.7.3 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.8.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.8.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.9.0 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.9.0.dev1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.9.0.dev2 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.9.0rc1 | No fix listed |
| pypi matrix-synapse(PyPI) | = 1.9.1 | No fix listed |
| ubuntu/matrix-synapse(Ubuntu:22.04) | All versions | No fix listed |
| debian/matrix-synapse(Debian:14) | < 1.24.0-1 | 1.24.0-1 |
| debian/matrix-synapse(Debian:14) | = 0.19.2+dfsg-3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.19.2+dfsg-4 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.19.2+dfsg-5 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.19.2+dfsg-6 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.24.0+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.27.2+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.28.0+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.28.0+dfsg-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.28.1+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.29.1+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.30.0+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.31.0+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.31.0+dfsg-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.31.1+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.31.1+dfsg-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.31.2+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.32.2+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.0+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.1+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.2+dfsg-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.2+dfsg-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.2+dfsg-3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.3-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.3-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.3.1-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.4-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.4-1~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.8-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.9-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.33.9-2~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0-3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0-3~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0-3~bpo9+2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.0~rc2-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-2~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-3~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-3~bpo9+2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.34.1.1-4 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.0-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.0-1~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.0-1~bpo9+2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.0-1~bpo9+3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.1.1-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-1~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-1~bpo9+2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-2 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-3 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-4 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-5 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-5~bpo9+1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.2-6 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.3.2-1 | No fix listed |
| debian/matrix-synapse(Debian:14) | = 0.99.5.1-1 | No fix listed |
References
- github.com third-party-advisory vendor-advisory
- nvd.nist.gov third-party-advisory vendor-advisory
- github.com patch third-party-advisory
- github.com patch third-party-advisory
- github.com release-notes third-party-advisory
- github.com
- lists.fedoraproject.org
- lists.fedoraproject.org
- Ubuntu CVE tracker vendor-advisory
- www.cve.org
- github.com
- security-tracker.debian.org vendor-advisory
- FEDORA-2020-eeb66c2ece vendor-advisory
- FEDORA-2020-a2172c484d vendor-advisory
- security.alpinelinux.org vendor-advisory