SB2022070711 - Inconsistent interpretation of HTTP requests in IBM CICS TX Standard

Description

This security bulletin contains information about 1 vulnerability.

1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2022-34306)

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests. A remote user can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Remediation

Install update from vendor's website.

References

• https://www.ibm.com/blogs/psirt/security-bulletin-ibm-cics-tx-standard-is-vulnerable-to-http-header-injection-cve-2022-34306/
• https://www.ibm.com/support/pages/node/6601659