https://bugzilla.redhat.com/show_bug.cgi?id=1971016
Bug ID: 1971016
Summary: CVE-2021-28169 jetty: requests to the ConcatServlet
and WelcomeFilter are able to access protected
resources within the WEB-INF directory
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: medium
Priority: medium
Assignee: security-response-team(a)redhat.com
Reporter: gsuckevi(a)redhat.com
CC: abenaiss(a)redhat.com, aileenc(a)redhat.com,
aos-bugs(a)redhat.com, ataylor(a)redhat.com,
bibryam(a)redhat.com, bmontgom(a)redhat.com,
chazlett(a)redhat.com, dbecker(a)redhat.com,
drieden(a)redhat.com,
eclipse-sig(a)lists.fedoraproject.org,
eparis(a)redhat.com, eric.wittmann(a)redhat.com,
ggaughan(a)redhat.com, gmalinko(a)redhat.com,
hbraun(a)redhat.com, janstey(a)redhat.com,
java-sig-commits(a)lists.fedoraproject.org,
jburrell(a)redhat.com, jjohnstn(a)redhat.com,
jjoyce(a)redhat.com, jkang(a)redhat.com,
jochrist(a)redhat.com, jokerman(a)redhat.com,
jross(a)redhat.com, jschluet(a)redhat.com,
jwon(a)redhat.com, krzysztof.daniel(a)gmail.com,
lhh(a)redhat.com, lpeer(a)redhat.com, mat.booth(a)gmail.com,
mburns(a)redhat.com, mizdebsk(a)redhat.com,
mkolesni(a)redhat.com, nstielau(a)redhat.com,
pantinor(a)redhat.com, pbhattac(a)redhat.com,
sclewis(a)redhat.com, scohen(a)redhat.com,
sd-operator-metering(a)redhat.com, slinaber(a)redhat.com,
sochotni(a)redhat.com, sponnaga(a)redhat.com,
swoodman(a)redhat.com, tflannag(a)redhat.com,
vbobade(a)redhat.com
Target Milestone: ---
Classification: Other
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.
Reference:
https://github.com/eclipse/jetty.project/security/advisories/GHSA-gwcr-j4...
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