Auth bypass in Nheko-Reborn Nheko
CVE-2022-39264
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001
Affected products
- Nheko-Reborn Nheko — versions < 0.10.2
- Fedoraproject Fedora — versions 36, 37
Weakness classification (CWE)
References
- github.com/Nheko-Reborn/nheko/security/advisories/GHSA-8jcp-8jq4-5mm7 (Patch, Third Party Advisory)
- github.com/Nheko-Reborn/nheko/commit/67bee15a389f9b8a9f6c3a340558d1e2319e7199 (Patch)
- github.com/Nheko-Reborn/nheko/releases/tag/v0.10.2 (Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2022-39264?
- CVE-2022-39264 is a high-severity vulnerability in Nheko-Reborn Nheko, classified under Improper Authentication. CVSS score: 8.6/10. Published 2022-09-28.
- How severe is CVE-2022-39264?
- High severity. CVSS v3 base score is 8.6 out of 10.