Fixes are available
9.0.0.6: WebSphere Application Server traditional V9.0 Fix Pack 6
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
9.0.0.7: WebSphere Application Server traditional V9.0 Fix Pack 7
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
9.0.0.8: WebSphere Application Server traditional V9.0 Fix Pack 8
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
9.0.0.9: WebSphere Application Server traditional V9.0 Fix Pack 9
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
9.0.5.4: WebSphere Application Server traditional Version 9.0.5 Fix Pack 4
9.0.5.5: WebSphere Application Server traditional Version 9.0.5 Fix Pack 5
WebSphere Application Server traditional 9.0.5.6
9.0.5.7: WebSphere Application Server traditional Version 9.0.5 Fix Pack 7
9.0.5.8: WebSphere Application Server traditional Version 9.0.5.8
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
9.0.5.9: WebSphere Application Server traditional Version 9.0.5.9
9.0.5.10: WebSphere Application Server traditional Version 9.0.5.10
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
9.0.5.11: WebSphere Application Server traditional Version 9.0.5.11
APAR status
Closed as new function.
Error description
Requests with obsolete folds containing only spaces and/or tabs are rejected by the server with a 400 error after PI73984. For example, a header My-Header with a value of 'Test\r\n ' would be rejected. A configuration option was added to allow the server to either allow or deny such requests.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: Users of IBM HTTP Server (powered by * * Apache) * **************************************************************** * PROBLEM DESCRIPTION: Requests with obsolete folds containing * * only spaces and/or tabs are rejected by * * the server with a 400 error after * * PI73984. * **************************************************************** * RECOMMENDATION: The application that is sending empty * * obsolete folds should be modified to not do * * so as it is not compliant with the HTTP 1.1 * * specification. * **************************************************************** Requests with obsolete folds containing only spaces and/or tabs are rejected by the server with a 400 error after PI73984 (CVE- 2016-8743). A header My-Header, for example, with a value of 'Test\r\n ' would be rejected.
Problem conclusion
A configuration option was added to the IBM HTTP Server to allow the server to either allow or deny such requests. This can be configured using the HttpProtocolOptions directive and specify the 'AllowEmptyFoldedLines' option. Another option 'DenyEmptyFoldedLines' was also added to deny handling requests with empty folded lines. This fix is targeted for IBM HTTP Server fix packs: - 9.0.0.6 - 8.5.5.13 - 8.0.0.15 - 7.0.0.45
Temporary fix
Comments
APAR Information
APAR number
PI88232
Reported component name
IBM HTTP SERVER
Reported component ID
5724J0801
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-10-03
Closed date
2017-10-10
Last modified date
2017-10-13
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
R700 PSY
UP
R800 PSY
UP
R850 PSY
UP
R900 PSY
UP
Document Information
Modified date:
07 September 2022