| Name | CVE-2017-7657 |
| Description | In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default configuration with RFC2616 compliance enabled), transfer-encoding chunks are handled poorly. The chunk length parsing was vulnerable to an integer overflow. Thus a large chunk size could be interpreted as a smaller chunk size and content sent as chunk body could be interpreted as a pipelined request. If Jetty was deployed behind an intermediary that imposed some authorization and that intermediary allowed arbitrarily large chunks to be passed on unchanged, then this flaw could be used to bypass the authorization imposed by the intermediary as the fake pipelined request would not be interpreted by the intermediary as a request. |
| 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-4278-1 |
| Debian Bugs | 902953 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| jetty (PTS) | jessie, jessie (lts) | 6.1.26-4+deb8u2 | vulnerable |
| jetty8 (PTS) | jessie, jessie (lts) | 8.1.16-4+deb8u1 | vulnerable |
| jetty9 (PTS) | stretch (security), stretch (lts), stretch | 9.2.30-0+deb9u2 | fixed |
| buster (security), buster, buster (lts) | 9.4.50-4+deb10u2 | fixed |
| bullseye (security), bullseye | 9.4.50-4+deb11u2 | fixed |
| bookworm (security), bookworm | 9.4.50-4+deb12u3 | fixed |
| sid, trixie | 9.4.56-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| jetty | source | (unstable) | (unfixed) | | | |
| jetty8 | source | wheezy | (unfixed) | end-of-life | | |
| jetty8 | source | (unstable) | (unfixed) | | | |
| jetty9 | source | stretch | 9.2.21-1+deb9u1 | | DSA-4278-1 | |
| jetty9 | source | (unstable) | 9.2.25-1 | low | | 902953 |
Notes
[jessie] - jetty <ignored> (very hard to exploit, complex patch)
[jessie] - jetty8 <ignored> (very hard to exploit, complex patch)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=535668
https://github.com/eclipse/jetty.project/commit/a285deea
[wheezy] - jetty <postponed> (Minor issue, can be worth fixing later)