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HistoryAug 07, 2023 - 11:41 a.m.

Security Bulletin: "Timing Oracle in RSA Decryption " issue may affect GSKit shipped with IBM CICS TX Standard

2023-08-0711:41:33
www.ibm.com
13
ibm
cics tx standard
rsa decryption
gskit
vulnerability
timing oracle

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

43.0%

Summary

"Timing Oracle in RSA Decryption " issue may affect GSKit shipped with IBM CICS TX Standard. IBM CICS TX Standard has addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2023-33850
**DESCRIPTION:**IBM GSKit-Crypto could allow a remote attacker to obtain sensitive information, caused by a timing-based side channel in the RSA Decryption implementation. By sending an overly large number of trial messages for decryption, an attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/257132 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Affected Product(s) Version(s)
IBM CICS TX Standard 11.1

Remediation/Fixes

Product Version Platform Remediation / Fix
IBM CICS TX Standard

11.1

| Linux| Fix Central Link

Workarounds and Mitigations

None

Affected configurations

Vulners
Node
ibmcics_txMatch11.1
CPENameOperatorVersion
cics txeq11.1

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

43.0%

Related for A79ABE75207C4135CE04152A2132DBBE5F7747CAB8FD7A707A48E0C8DF97E3B8