| Name | CVE-2019-9516 |
| Description | Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4505-1 |
| Debian Bugs | 935037 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| nginx (PTS) | jessie, jessie (lts) | 1.6.2-5+deb8u10 | fixed |
| stretch (security) | 1.10.3-1+deb9u7 | fixed | |
| stretch (lts), stretch | 1.10.3-1+deb9u8 | fixed | |
| buster (security), buster, buster (lts) | 1.14.2-2+deb10u5 | fixed | |
| bullseye (security), bullseye | 1.18.0-6.1+deb11u3 | fixed | |
| bookworm | 1.22.1-9 | fixed | |
| sid, trixie | 1.26.0-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| nginx | source | wheezy | (unfixed) | end-of-life | ||
| nginx | source | jessie | (not affected) | |||
| nginx | source | stretch | 1.10.3-1+deb9u3 | DSA-4505-1 | ||
| nginx | source | buster | 1.14.2-2+deb10u1 | DSA-4505-1 | ||
| nginx | source | (unstable) | 1.14.2-3 | 935037 |
[jessie] - nginx <not-affected> (HTTP2 support only exists since version 1.9.5)
https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/
https://github.com/nginx/nginx/commit/6dfbc8b1c2116f362bb871efebbf9df576738e89 (master)
https://github.com/nginx/nginx/commit/dbdd9ffea81d9db46fb88b5eba828f2ad080d388 (release-1.16.1)
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md