APAR status
Closed as program error.
Error description
The user gets an error 400 Bad Request in the browser and in the IBM Http Server access.log when trying to use ErrorDocument to handle a request. This occurred after upgrading from 8.5.5.10 to 8.5.5.13 In the IBM Http Server error.log, the following error messages are displayed: Invalid host name Client sent malformed Host header
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM HTTP Server * **************************************************************** * PROBLEM DESCRIPTION: IHS returns a HTTP 400 error for * * hostnames where the final component * * of the domain begins with a digit. * **************************************************************** * RECOMMENDATION: * **************************************************************** IHS reports "Client sent malformed Host header" when the requested URL ends with a segment beginning with a digit, such as example.com.3d
Problem conclusion
The code was updated to allow these non-conforming domains. The fix for this APAR is targeted for inclusion in IBM HTTP Server fix packs 8.5.5.18 and 9.0.5.4. For more information, see 'Recommended Updates for WebSphere Application Server': http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PH21717
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-02-03
Closed date
2020-04-14
Last modified date
2020-04-14
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
IBM HTTP SERVER
Fixed component ID
5724J0801
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTJ","label":"IBM HTTP Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5"}]
Document Information
Modified date:
07 September 2022