Security Bulletin
Summary
Linux OpenSSL is vulnerable to a denial of service, affected by CVES : CVE-2017-3735, CVE-2018-0732, CVE-2018-0739.
Vulnerability Details
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the sending of a very large prime value to the client by a malicious server during key agreement in a TLS handshake. By spending an unreasonably long period of time generating a key for this prime, a remote attacker could exploit this vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/144658 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2018-0739
DESCRIPTION: OpenSSL is vulnerable to a denial of service. By sending specially crafted ASN.1 data with a recursive definition, a remote attacker could exploit this vulnerability to consume excessive stack memory.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140847 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2017-3735
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error while parsing an IPAdressFamily extension in an X.509 certificate. An attacker could exploit this vulnerability to trigger an out-of-bounds read, resulting in an incorrect text display of the certificate.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/131047 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
Affected Products and Versions
Power HMC V8.7.0.0
Power HMC V9.1.910.0
Remediation/Fixes
Remediation/Fixes
The following fixes are available on IBM Fix Central at: http://www-933.ibm.com/support/fixcentral/
|
Product
|
VRMF
|
APAR
|
Remediation/Fix
|
|
Power HMC
|
V8.8.7. 2 PTF3 ppc
|
MB04193
|
|
|
Power HMC
|
V8.8.7. 2 PTF3 x86
|
MB04192
|
|
|
Power HMC
|
V9.1.920.0 SP1 ppc
|
MB04195
|
|
|
Power HMC
|
V9.1.920.0 SP1 x86
|
MB04194
|
Workarounds and Mitigations
None
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References
Change History
Initial Version: 3 March 2019
*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.
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Document Information
Modified date:
22 September 2021
UID
ibm10794451