CVE-2019-5885 Matrix Synapse Predictable Secret Key

What is CVE-2019-5885?

CVE-2019-5885 is a high-severity vulnerability in Fedoraproject Fedora, published on 19 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users.

Weakness: CWE-330

Which versions are affected by CVE-2019-5885?

3 open source packages ship an affected version, including matrix-synapse. It affects 2 products.

Products include Fedoraproject Fedora, Matrix Synapse.

How do I fix CVE-2019-5885?

Upgrade matrix-synapse to 0.34.0.1 or later.

Is CVE-2019-5885 being exploited?

There is no known exploitation of CVE-2019-5885 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jrqm-v8cv-53ww, PYSEC-2019-187, UBUNTU-CVE-2019-5885.