Security Bulletin
Summary
IBM MQ Appliance has resolved an information disclosure vulnerability.
Vulnerability Details
CVEID: CVE-2018-20852
DESCRIPTION: Python could allow a remote attacker to obtain sensitive information, caused by the failure to correctly validate the domain by http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py. By using a server with a hostname that has another valid hostname as a suffix, an attacker could exploit this vulnerability to obtain leaked existing cookies.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/169515 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
DESCRIPTION: Python could allow a remote attacker to obtain sensitive information, caused by the failure to correctly validate the domain by http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py. By using a server with a hostname that has another valid hostname as a suffix, an attacker could exploit this vulnerability to obtain leaked existing cookies.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/169515 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM MQ Appliance | 9.1 LTS |
| IBM MQ Appliance | 9.1 CD |
Remediation/Fixes
IBM MQ Appliance 9.1 LTS
Apply fixpack 9.1.0.6, or later.
IBM MQ Appliance 9.1 CDApply IBM MQ Appliance 9.2, or later.
Workarounds and Mitigations
Only applicable to IBM MQ Appliances configured in a High Availability group.
Get Notified about Future Security Bulletins
References
Off
Change History
20 Jul 2020: 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:
23 July 2020
UID
ibm16252353