CVE-2022-39264

NameCVE-2022-39264
Descriptionnheko 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nheko (PTS)buster0.6.3-2fixed
bullseye0.8.0+really0.7.2-4fixed
bookworm0.11.3-2fixed
trixie0.11.3-2.1fixed
sid0.11.3+~0.9.2+~1.0.0+~0.3.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nhekosourcebuster(not affected)
nhekosourcebullseye(not affected)
nhekosource(unstable)0.10.2-1

Notes

[bullseye] - nheko <not-affected> (Vulnerable code not present)
[buster] - nheko <not-affected> (Vulnerable code not present)
https://github.com/Nheko-Reborn/nheko/security/advisories/GHSA-8jcp-8jq4-5mm7
https://github.com/Nheko-Reborn/nheko/commit/67bee15a389f9b8a9f6c3a340558d1e2319e7199 (v0.10.2)
Support for secrets in keychain: https://github.com/Nheko-Reborn/nheko/commit/7b46aa2a6e4fdb71632128a94b6645613631d8d4 (v0.8.0)

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