IBM Support

PM32132: SIP DOES NOT PARSE THE VIA BRANCH CORRECTLY.

Fixes are available

7.0.0.19: WebSphere Application Server V7.0 Fix Pack 19
7.0.0.21: WebSphere Application Server V7.0 Fix Pack 21
7.0.0.23: WebSphere Application Server V7.0 Fix Pack 23
7.0.0.25: WebSphere Application Server V7.0 Fix Pack 25
7.0.0.27: WebSphere Application Server V7.0 Fix Pack 27
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • Session Initiation Protocol (SIP) does not parse the Via branch
    correctly.
    
    The SIP container is removing all characters in SIP Via header's
    branch field that are present after an ' (apostrophe). This
    causes the SIP container to believe the subsequent new INVITE
    that comes in with unique Call-IDs are retransmissions for
    previous INVITEs (because when SIP container strips off the
    characters after the apostrophe the branch ID values match) .
    SIP container just retransmits its original response and it
    breaks the call.
    
    WebSphere Application Server V7.0.
    Distributed operating systems.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  SIP (Session Initiation Protocol) users     *
    *                  of IBM WebSphere Application Server V7.0    *
    ****************************************************************
    * PROBLEM DESCRIPTION: The parser does not consume the         *
    *                      apostrophe (') character when           *
    *                      processing header parameters.           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem is in the SIP parser, when processing a header
    parameter value. The parser does not recognize the apostrophe
    (ASCII code 39) or the grave accent (ASCII code 96) as valid
    characters in the token. This results in a broken parameter.
    

Problem conclusion

  • The bug is fixed in the SIP parser. With this fix, header
    parameters are parsed correctly, including the apostrophe and
    grave accent characters.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 7.0.0.19.  Please refer to the Recommended Updates
    page for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM32132

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-02-08

  • Closed date

    2011-03-14

  • Last modified date

    2011-03-14

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PM33919

Fix information

  • Fixed component name

    WEBS APP SERV N

  • Fixed component ID

    5724H8800

Applicable component levels

  • R700 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM32132

Modified date: 14 March 2011