CVE-2021-28164

NameCVE-2021-28164
DescriptionIn Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with URIs that contain %2e or %2e%2e segments to access protected resources within the WEB-INF directory. For example a request to /context/%2e/WEB-INF/web.xml can retrieve the web.xml file. This can reveal sensitive information regarding the implementation of a web application.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jetty9 (PTS)stretch9.2.21-1+deb9u1fixed
stretch (security)9.2.30-0+deb9u2fixed
buster9.4.15-1fixed
sid, bullseye9.4.39-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jetty9sourcestretch(not affected)
jetty9sourcebuster(not affected)
jetty9source(unstable)9.4.39-1

Notes

[buster] - jetty9 <not-affected> (Vulnerable code introduced later)
[stretch] - jetty9 <not-affected> (Vulnerable code introduced later)
https://github.com/eclipse/jetty.project/security/advisories/GHSA-v7ff-8wcx-gmc5
https://github.com/eclipse/jetty.project/commit/e412c8a15b3334b30193f40412c0fbc47e478e83
Introduced by https://github.com/eclipse/jetty.project/commit/20ef71fe5d709a90c2a5698834fff07b9b4e7ad7 (jetty-9.4.37.v20210219)

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