PI90112: IMPROVE THE DEFAULT CIPHER SUITES FOR SSLV3, TLSV1.0, TLSV1.1, AND TLSV1.2 IN CACHING PROXY TO REMOVE SEVERAL WEAK CIPHERS.

Fixes are available

APAR status

Closed as program error.

Error description

Improve the default cipher suites for SSLv3, TLSv1.0, TLSv1.1,
and TLSv1.2 in Caching Proxy to remove several weak ciphers.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  Users of IBM Caching Proxy SSL              *
****************************************************************
* PROBLEM DESCRIPTION: Improve the default cipher suites for   *
*                      SSLv3, TLSv1.0, TLSv1.1, and TLSv1.2 in *
*                      Caching Proxy to remove several weak    *
*                      ciphers.                                *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Improve the default cipher suites for SSLv3, TLSv1.0, TLSv1.1,
and TLSv1.2 in Caching Proxy to remove weak ciphers such as
3DES.
The new default ciphers have been listed below:
SSLv3 / TLSv1.0 / TLSv1.1:
* 2F - TLS_RSA_WITH_AES_128_CBC_SHA
* 35 - TLS_RSA_WITH_AES_256_CBC_SHA
TLSv1.2:
* 9C - TLS_RSA_WITH_AES_128_GCM_SHA256
* 9D - TLS_RSA_WITH_AES_256_GCM_SHA384
* 3C - TLS_RSA_WITH_AES_128_CBC_SHA256
* 3D - TLS_RSA_WITH_AES_256_CBC_SHA256
* 2F - TLS_RSA_WITH_AES_128_CBC_SHA
* 35 - TLS_RSA_WITH_AES_256_CBC_SHA

Problem conclusion

The default ciphers for Caching Proxy have been modified. The
new defaults are listed below for each protocol.

SSLv3 / TLSv1.0 / TLSv1.1:
* 2F - TLS_RSA_WITH_AES_128_CBC_SHA
* 35 - TLS_RSA_WITH_AES_256_CBC_SHA

TLSv1.2:
* 9C - TLS_RSA_WITH_AES_128_GCM_SHA256
* 9D - TLS_RSA_WITH_AES_256_GCM_SHA384
* 3C - TLS_RSA_WITH_AES_128_CBC_SHA256
* 3D - TLS_RSA_WITH_AES_256_CBC_SHA256
* 2F - TLS_RSA_WITH_AES_128_CBC_SHA
* 35 - TLS_RSA_WITH_AES_256_CBC_SHA

3DES (0A) ciphers can be re-enabled using the following
directives as needed:
V3CipherSpecs 2F350A
TLSV11CipherSpecs 2F350A
TLSV12CipherSpecs 9C9D3C3D2F350A

This fix is targeted for IBM Caching Proxy fix packs:
- 9.0.0.8
- 8.5.5.14
- 8.0.0.15

Temporary fix

Comments

APAR Information

APAR number
PI90112
Reported component name
WEBS CACH PROXY
Reported component ID
5724H8810
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-11-13
Closed date
2018-03-05
Last modified date
2018-03-05

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
WEBS CACH PROXY
Fixed component ID
5724H8810

Applicable component levels

R800 PSY
UP
R850 PSY
UP
R900 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"900","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI90112: IMPROVE THE DEFAULT CIPHER SUITES FOR SSLV3, TLSV1.0, TLSV1.1, AND TLSV1.2 IN CACHING PROXY TO REMOVE SEVERAL WEAK CIPHERS.

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

R800 PSY

R850 PSY

R900 PSY

Document Information

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