| Name | CVE-2024-25622 |
| Description | h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. The configuration directives provided by the headers handler allows users to modify the response headers being sent by h2o. The configuration file of h2o has scopes, and the inner scopes (e.g., path level) are expected to inherit the configuration defined in outer scopes (e.g., global level). However, if a header directive is used in the inner scope, all the definition in outer scopes are ignored. This can lead to headers not being modified as expected. Depending on the headers being added or removed unexpectedly, this behavior could lead to unexpected client behavior. This vulnerability is fixed in commit 123f5e2b65dcdba8f7ef659a00d24bd1249141be. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1084984 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| h2o (PTS) | buster (security), buster, buster (lts) | 2.2.5+dfsg2-2+deb10u2 | vulnerable |
| bullseye | 2.2.5+dfsg2-6 | vulnerable | |
| bookworm | 2.2.5+dfsg2-7 | vulnerable | |
| sid, trixie | 2.2.5+dfsg2-9 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| h2o | source | buster | (unfixed) | end-of-life | ||
| h2o | source | (unstable) | (unfixed) | 1084984 |
[bookworm] - h2o <no-dsa> (Minor issue)
[bullseye] - h2o <postponed> (Minor issue; can be fixed in next update)
https://github.com/h2o/h2o/security/advisories/GHSA-5m7v-cj65-h6pj
https://github.com/h2o/h2o/issues/3332
https://github.com/h2o/h2o/commit/123f5e2b65dcdba8f7ef659a00d24bd1249141be