Security Bulletin
Summary
libxml2 is not used directly IBM App Connect Enterprise Certified Container but is present as part of the base operating system packages. IBM App Connect Enterprise Certified Container images may be vulnerable to denial of service. This bulletin provides patch information to address the reported vulnerabilities CVE-2017-9047, CVE-2017-9048, CVE-2017-9049 and CVE-2017-9050 in libxml2.
Vulnerability Details
CVEID: CVE-2017-9047
DESCRIPTION: libxml2 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the xmlSnprintfElementContent function in valid.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause application to crash.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/126274 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2017-9048
DESCRIPTION: libxml2 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking of the strlen(buf) size in the xmlSnprintfElementContent function in valid.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/126275 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2017-9049
DESCRIPTION: libxml2 is vulnerable to a heap-based buffer overflow, caused by a buffer over-read flaw in the xmlDictComputeFastKey function in dict.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/126276 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2017-9050
DESCRIPTION: libxml2 is vulnerable to a heap-based buffer overflow, caused by a buffer over-read flaw in the xmlDictAddString function in dict.c. By sending a specially-crafted request, a local attacker could overflow a buffer and cause the application to crash.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/126277 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| App Connect Enterprise Certified Container | 4.1 |
| App Connect Enterprise Certified Container | 4.2 |
| App Connect Enterprise Certified Container | 5.0-lts |
| App Connect Enterprise Certified Container | 5.1 |
| App Connect Enterprise Certified Container | 5.2 |
| App Connect Enterprise Certified Container | 6.0 |
Remediation/Fixes
App Connect Enterprise Certified Container 4.1, 4.2, 5.0, 5.1, 5.2 and 6.0 (Continuous Delivery)
Upgrade to App Connect Enterprise Certified Container Operator version 6.1.0 or higher, and ensure that all components are at 12.0.6.0-r1 or higher. Documentation on the upgrade process is available at https://www.ibm.com/docs/en/app-connect/containers_cd?topic=releases-upgrading-operator
App Connect Enterprise Certified Container 5.0 LTS (Long Term Support)
Upgrade to App Connect Enterprise Certified Container Operator version 5.0.1 or higher, and ensure that all components are at 12.0.6.0-r1-lts or higher. Documentation on the upgrade process is available at https://www.ibm.com/docs/en/app-connect-contlts?topic=releases-upgrading-operator
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
07 Nov 2022: 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
Was this topic helpful?
Document Information
Modified date:
07 November 2022
Initial Publish date:
07 November 2022
UID
ibm16837647