| Name | CVE-2017-7559 |
| Description | In Undertow 2.x before 2.0.0.Alpha2, 1.4.x before 1.4.17.Final, and 1.3.x before 1.3.31.Final, it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own. |
| 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 | 885576 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| undertow (PTS) | sid, trixie | 2.3.18-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| undertow | source | (unstable) | 1.4.23-1 | 885576 |
CVE is for an incomplete fix of CVE-2017-2666
Invalid characters were still allowed in the query string and path parameters.
https://issues.jboss.org/browse/UNDERTOW-1165
https://issues.jboss.org/browse/UNDERTOW-1295
https://bugzilla.redhat.com/show_bug.cgi?id=1481665#c7
Fixed by https://github.com/undertow-io/undertow/commit/3436b03eda8b0b62c1855698c4d7c358add836c2