Input validation error in Jetty - CVE-2021-28169
Published: June 9, 2021
Vulnerability identifier: #VU53973
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-28169
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Eclipse
Affected software:
Jetty
Jetty
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to sensitive information..
The vulnerability exists due to a double decoding issue when parsing URI with certain characters. A remote attacker can send requests to the ConcatServlet and WelcomeFilter and view contents of protected resources within the WEB-INF directory.
Example:
/concat?/%2557EB-INF/web.xml
How to mitigate CVE-2021-28169
Install updates from vendor's website.