Description

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.

Remediation

References

CVE-2021-28169

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Oracle HTTP Server NULL Pointer Dereference Vulnerability (CVE-2021-34798)

Joomla CVE-2017-7988 Vulnerability (CVE-2017-7988)

Severity

Medium

Classification

CVE-2021-28169 CWE-200 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update Known Vulnerabilities