CVE-2023-49880 — In the Message Entry and Repair (MER) facility of IBM Financial Transaction Mana

In the Message Entry and Repair (MER) facility of IBM Financial Transaction Manager for SWIFT Services 3.2.4 the sending address and the message type of FIN messages are assumed to be immutable. However, an attacker might modify these elements of a business transaction. IBM X-For

01What is this vulnerability?

In the Message Entry and Repair (MER) facility of IBM Financial Transaction Manager for SWIFT Services 3.2.4 the sending address and the message type of FIN messages are assumed to be immutable. However, an attacker might modify these elements of a business transaction. IBM X-Force ID: 273183.

02Affected products

Vendor	Product	Versions
IBM	Financial Transaction Manager for SWIFT Services	3.2.4

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-12-25T02:24:32.216Z
• Last modified: 2024-08-02T22:09:48.211Z

09References

• www.ibm.com — https://www.ibm.com/support/pages/node/7101167
• exchange.xforce.ibmcloud.com — https://exchange.xforce.ibmcloud.com/vulnerabilities/273183