Security Bulletin
Summary
There are vulnerabilities in netty classes from couchdb clouseau jar file included in IBM Knowledge Catalog.
Vulnerability Details
CVEID: CVE-2019-20444
DESCRIPTION: Netty is vulnerable to HTTP request smuggling, caused by a flaw in the HttpObjectDecoder.java. By sending a specially-crafted request, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/175487 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVEID: CVE-2019-16869
DESCRIPTION: Netty is vulnerable to HTTP request smuggling, caused by a flaw when handling unusual whitespaces before the colon in HTTP headers. By sending a specially-crafted request, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/167672 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVEID: CVE-2021-37137
DESCRIPTION: Netty netty-codec is vulnerable to a denial of service, caused by not restrict the chunk length in the SnappyFrameDecoder. By sending a specially-crafted input, a remote attacker could exploit this vulnerability to cause excessive memory usage, and results in a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211779 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)
CVEID: CVE-2021-37136
DESCRIPTION: Netty netty-codec is vulnerable to a denial of service, caused by not allow size restrictions for decompressed data in the Bzip2Decoder. By sending a specially-crafted input, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211777 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)
CVEID: CVE-2015-2156
DESCRIPTION: Netty could allow a remote attacker to bypass restrictions, caused by the improper validation of characters in a cookie name by the cookie parsing code. An attacker could exploit this vulnerability to bypass the HttpOnly flag in all Play applications and gain access to the system.
CVSS Base score: 6.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/103239 for the current score.
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:N)
CVEID: CVE-2019-20445
DESCRIPTION: Netty could provide weaker than expected security, caused by non-proper handling of Content-Length and Transfer-Encoding in the HttpObjectDecoder.java. A remote attacker could exploit this vulnerability to launch further attacks on the system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/175486 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM Watson Knowledge Catalog on-prem | Versions prior to 4.8.0 |
Remediation/Fixes
Upgrade to IBM Watson Knowledge Catalog on-prem 4.8.0 or later.
The approach taken was to remove the vulnerable netty classes from the couchdb clouseau jar file. This is now a false positive as its not exploitable due to the absence of the vulnerable classes.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
28 May 2024: 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
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
10 June 2024
UID
ibm17155060