Security Bulletin
Summary
The OpenTelemetry tracing in IBM App Connect Enterprise is vulnerable to a heap-based buffer overflow due to libcurl and cURL. (CVE-2023-38546, CVE-2023-38545)
Vulnerability Details
CVEID: CVE-2023-38546
DESCRIPTION: cURL libcurl could allow a remote attacker to bypass security restrictions, caused by a flaw in the curl_easy_duphandle function if a transfer has cookies enabled when the handle is duplicated. By sending a specially crafted request, an attacker could exploit this vulnerability to insert cookies at will into a running program.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268046 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-38545
DESCRIPTION: libcurl and cURL are vulnerable to a heap-based buffer overflow, caused by the improper handling of hostnames longer than 255 bytes during a slow SOCKS5 proxy handshake. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268045 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM App Connect Enterprise | 12.0.7.0 - 12.0.10.0 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability/vulnerabilities now by applying the appropriate fix to IBM App Connect Enterprise
| Affected Product(s) | Version(s) | APAR | Remediation / Fix |
| IBM App Connect Enterprise | 12.0.7.0 - 12.0.10.0 | IT44810 |
The APAR (IT44810) is available from |
Workarounds and Mitigations
None
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References
Acknowledgement
Change History
15 Nov 2023: 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:
20 November 2023
UID
ibm17076344