CVE-2022-34165: 
IBM WebSphere App Server vulnerability analysis and mitigation

CVE-2022-34165 is a security vulnerability affecting IBM WebSphere Application Server versions 7.0, 8.0, 8.5, and 9.0, as well as IBM WebSphere Application Server Liberty versions 17.0.0.3 through 22.0.0.9. The vulnerability was discovered and disclosed in September 2022, identified as an HTTP header injection vulnerability caused by improper validation (IBM Security).

The vulnerability is classified as an HTTP header injection flaw with a CVSS v3.1 base score of 5.4 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N). The technical root cause has been identified as improper validation in the HTTP header processing functionality. The vulnerability is categorized under CWE-20 (NVD).

If exploited, this vulnerability could allow an attacker to conduct various attacks against the vulnerable system, including cache poisoning and cross-site scripting. The impact affects both confidentiality and integrity of the system, though availability is not compromised (IBM Security, Security Online).

IBM has released patches and recommends applying either interim fixes or upgrading to specific fix pack levels. For Liberty versions, users should upgrade to Fix Pack 22.0.0.10 or later, or apply Interim Fix PH46816. For traditional WebSphere versions, specific fix packs are available: 9.0.5.14 or later for V9.0, 8.5.5.23 or later for V8.5, and specific interim fixes for V8.0 and V7.0 (IBM Security).