Fix (APAR):  PH21992

Status:  Fix

Release:  9.0.5.3,9.0.5.2,9.0.5.1

Operating System:  AIX,HP-UX,Linux,Solaris,Windows,z/OS

Supersedes Fixes:  

CMVC Defect:  xxxxxx

Byte size of APAR:  31350305

Date: 2020-04-13

Abstract:  Multiple vulnerabilities in IBM HTTP Server (CVE-2020-1927, CVE-2020-1934)

Description/symptom of problem:  
PH21992 resolves the following problem:

ERROR DESCRIPTION:
CVE-2020-1927: IBM HTTP Server could allow a remote attacker to conduct phishing attacks, caused by an open redirect vulnerability in the mod_rewrite module. 
CVE-2020-1934: IBM HTTP Server could allow a remote attacker to execute arbitrary code on the system, caused by the use of an uninitialized value in mod_proxy_ftp. 

LOCAL FIX:

PROBLEM SUMMARY:
CVE-2020-1927, CVE-2020-1934 in IBM HTTP Server. 

PROBLEM CONCLUSION:
IHS was updated to resolve the vulnerabilities.
This fix is targeted for IBM HTTP Server fix packs:
- 8.5.5.18
- 9.0.5.4


Directions to apply fix:  
Special Instructions: None

NOTE: The user must:
* Be at V1.8.5 or newer of the Installation Manager. Certain iFixes may require
  a newer version of the Installation Manager and the Installation Manager will
  inform you during the installation process if a newer version is required.
* Be logged in with the same authority level when unpacking a fix, fix pack, or
  refresh pack.

The IBM Information Center can provide details, if needed, on the use of the
Installation Manager to apply the interim fix:
http://www.ibm.com/support/knowledgecenter/SSDV2W_1.8.5/com.ibm.cic.agent.ui.doc/helpindex_imic.html.

1) Shutdown IBM HTTP Server
2) Apply the interim fix using Installation Manager
3) Restart IBM HTTP Server


Directions to remove fix:  
The IBM Information Center can provide details, if needed, on the use of the
Installation Manager to remove the interim fix:
http://www.ibm.com/support/knowledgecenter/SSDV2W_1.8.5/com.ibm.cic.agent.ui.doc/helpindex_imic.html.

1) Shutdown IBM HTTP Server
2) Remove the interim fix using Installation Manager
3) Restart IBM HTTP Server


Directions to re-apply fix:  
1) Stop IBM HTTP Server.
2) Follow the directions to apply the fix.
3) Restart IBM HTTP Server.


Additional Information: