IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Os_400 | Ibm | r520 (including) | r520 (including) |
| Os_400 | Ibm | v4r2m0 (including) | v4r2m0 (including) |
| Os_400 | Ibm | v4r3 (including) | v4r3 (including) |
| Os_400 | Ibm | v4r4 (including) | v4r4 (including) |
| Os_400 | Ibm | v4r5 (including) | v4r5 (including) |
| Os_400 | Ibm | v5r1 (including) | v5r1 (including) |
| Os_400 | Ibm | v5r2m0 (including) | v5r2m0 (including) |
| Os_400 | Ibm | v5r3m0 (including) | v5r3m0 (including) |