Security Bulletin
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
| Affected Product(s) | Version(s) |
| UCD - IBM UrbanCode Deploy | 7.1.1.1 |
| UCD - IBM UrbanCode Deploy | 7.0.5.3 |
| UCD - IBM UrbanCode Deploy | 7.1.1.2 |
| UCD - IBM UrbanCode Deploy | 7.1.1.0 |
| UCD - IBM UrbanCode Deploy | 7.1.0.0 |
| UCD - IBM UrbanCode Deploy | 7.0.5.4 |
| UCD - IBM UrbanCode Deploy | 6.2.7.4 |
| UCD - IBM UrbanCode Deploy | 6.2.7.3 |
| UCD - IBM UrbanCode Deploy | 6.2.7.8 |
| UCD - IBM UrbanCode Deploy | 7.0.4.0 |
| UCD - IBM UrbanCode Deploy | 6.2.7.9 |
| UCD - IBM UrbanCode Deploy | 7.0.3.0 |
| UCD - IBM UrbanCode Deploy | All |
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
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
06 Jul 2021: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
30 July 2021
Initial Publish date:
06 July 2021
UID
ibm16469935