CVE-2022-39264 nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver

What is CVE-2022-39264?

CVE-2022-39264 is a high-severity vulnerability in Fedoraproject Fedora, published on 28 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply the patch manually, avoid doing verifications of one's own devices, and/or avoid pressing the request button in the settings menu.

Weakness: CWE-295, CWE-287

Which versions are affected by CVE-2022-39264?

It affects 2 products.

Products include Fedoraproject Fedora, Nheko-Reborn Nheko.

How do I fix CVE-2022-39264?

Upgrade to a fixed version.

Is CVE-2022-39264 being exploited?

There is no known exploitation of CVE-2022-39264 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 DEBIAN-CVE-2022-39264, GHSA-8jcp-8jq4-5mm7, UBUNTU-CVE-2022-39264.