CVE-2023-33847: IBM CICS TX information disclosure

Severity: low (CVSS 3.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-08 · updated 2026-06-17

Description

IBM TXSeries for Multiplatforms 8.1, 8.2, 9.1, CICS TX Standard, 11.1, CICS TX Advanced 10.1, and 11.1 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 257102.

Affected products

IBM CICS TX Advanced: 10.1, 11.1
IBM Txseries For Multiplatform: from 8.2 before 8.2.0.2; from 9.1 before 9.1.0.2; 8.1 — fixed in 8.2.0.2, 9.1.0.2

How to fix

Upgrade to a fixed version: IBM Txseries For Multiplatform 8.2.0.2, 9.1.0.2. Check the vendor advisory for mitigations.

References

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