PM38826: apr_fnmatch() routine can result in high CPU with use of mod

Fixes are available

APAR status

Closed as program error.

Error description

Specially crafted input strings processed by the apr_fnmatch()
routine of APR can cause high CPU and possibly lead to a crash.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM HTTP Server users with mod_autoindex    *
*                  enabled and who have added directories      *
*                  without explicit indexes (index.html), or   *
*                  use long filenames. Also, users with        *
*                  third-party modules that call apr_fnmatch   *
*                  on user controlled input.                   *
****************************************************************
* PROBLEM DESCRIPTION: apr_fnmatch() may cause high CPU        *
*                      while processing specially crafted      *
*                      input strings. mod_autoindex is the     *
*                      only affected module.                   *
****************************************************************
* RECOMMENDATION:  Apply this fix.                             *
****************************************************************
CVE-2011-0419: Possible high CPU with use of mod_autoindex.

Problem conclusion

A fix is being provided to resolve an APR issue.
This fix is targeted for IBM HTTP Server fixpacks:
- 6.1.0.39
- 7.0.0.19
- 8.0.0.1

Temporary fix

Comments

APAR Information

APAR number
PM38826
Reported component name
IBM HTTP SERVER
Reported component ID
5724J0801
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2011-05-10
Closed date
2011-05-19
Last modified date
2011-06-18

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

R60A PSY
UP
R60H PSY
UP
R60I PSY
UP
R60P PSY
UP
R60S PSY
UP
R60W PSY
UP
R60Z PSY
UP
R61A PSY
UP
R61H PSY
UP
R61I PSY
UP
R61P PSY
UP
R61S PSY
UP
R61W PSY
UP
R61Z PSY
UP
R700 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTJ","label":"IBM HTTP Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
07 September 2022

Tips

PM38826: apr_fnmatch() routine can result in high CPU with use of mod_autoindex

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R60A PSY

R60H PSY

R60I PSY

R60P PSY

R60S PSY

R60W PSY

R60Z PSY

R61A PSY

R61H PSY

R61I PSY

R61P PSY

R61S PSY

R61W PSY

R61Z PSY

R700 PSY

Document Information

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