Bug#989999: jetty9: CVE-2021-28169

[Salvatore Bonaccorso]

Source: jetty9
Version: 9.4.39-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/eclipse/jetty.project/issues/6263
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for jetty9.

CVE-2021-28169[0]:
| For Eclipse Jetty versions <= 9.4.40, <= 10.0.2, <= 11.0.2,
| it is possible for requests to the ConcatServlet with a doubly encoded
| path to access protected resources within the WEB-INF directory. For
| example a request to `/concat?/%2557EB-INF/web.xml` can retrieve the
| web.xml file. This can reveal sensitive information regarding the
| implementation of a web application.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-28169
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28169
[1] https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4wh-j3cq
[2] https://github.com/eclipse/jetty.project/issues/6263
[3] https://github.com/eclipse/jetty.project/commit/1c05b0bcb181c759e98b060bded0b9376976b055

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore