Security Bulletin: CVE-2020-27223 when Jetty handles a request containing multiple Accept headers the server may enter a denial of service (DoS) state

Summary

when Jetty handles a request containing multiple Accept headers with a large number of quality (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values

Vulnerability Details

CVEID:CVE-2020-27223
**DESCRIPTION:**Eclipse Jetty is vulnerable to a denial of service, caused by an error when handling a request containing multiple Accept headers with a large number of quality parameters. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to exhaust minutes of CPU time.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/197559 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

Upgrade to 7.0.5.5, 7.1.2.1, 7.2.0.0

https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=ibm%7ERational&product=ibm/Rational/IBM+UrbanCode+Deploy&function=fixId&fixids=7.0.5.5-IBM-UrbanCode-Deploy
https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=ibm%7ERational&product=ibm/Rational/IBM+UrbanCode+Deploy&function=fixId&fixids=7.1.2.1-IBM-UrbanCode-Deploy
https://www.ibm.com/support/fixcentral/swg/downloadFixes?parent=ibm%7ERational&product=ibm/Rational/IBM+UrbanCode+Deploy&function=fixId&fixids=7.2.0.0-IBM-UrbanCode-Deploy

Workarounds and Mitigations

None