PK13230: IBM HTTP SERVER 2.0.47 AND 2.0.42 CUMULATIVE SECURITY E-FIX RESOLVE CAN-2005-2970, CAN-2005-2491, CAN-2005-2728 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as fixed if next. Error description This interim fix corrects several security vulnerabilities and other problems which were resolved after the previous interim fix, PK07831.Local fix Problem summary **************************************************************** * USERS AFFECTED: IBM HTTP SERVER 2.0.42.x/2.0.47.x users * **************************************************************** * PROBLEM DESCRIPTION: CAN-2005-2970, CAN-2005-2491, * * CAN-2005-2728 security exposures * **************************************************************** * RECOMMENDATION: * **************************************************************** Address several IHS security issues - PK13066 CAN-2005-2970 worker MPM memory leak after aborted connection (non-Windows platforms) - Prevent double-free of GSKit memory during stop or restart which sometimes caused a coredump (non-Windows platforms) - Prevent double-free when an error occurred reading data from sidd (non-Windows platforms only). - PK11929 CAN-2005-2491 Fix integer overflow in PCRE which leads to a heap-based buffer overflow. - PK11929 CAN-2005-2728 Fix byte-range filter which allowed remote attackers to cause a denial of service (memory consumption) via an HTTP header with large Range field - Handle strerror() returning NULL on Solaris, resolving possible crashes when writing to the error log. - Handle SSL requests where FIN is received from the client on Keepalive connections before the response is written. - sidd now reports specific error code and filename when its trace or error log can't be opened. - Fixed swapped references to ciphers 62 and 64. This resulted in SSLCipher* directives operating on the wrong cipher (i.e., using 64 if 62 had been specified). - Fix SSL handling of Timeout values larger than 2000 seconds, resolving SSL handshake failures Changes in previous interim fixes, included here - PK07831 Resolve incompatibility between IHS and certain GSKit levels - PK07747 Resolve incompatibility between AFPA support on Windows and Microsoft Security Patch MS05-019 - CAN-2005-2088 preventative measures to prevent HTTP request smuggling, from Apache 2.1.6 and future Apache 2.0.55 - mod_ibm_ssl: include client IP address on many messages - mod_ibm_ssl: improve reporting of many SSL communication errors - Fix a servlet timeout when a POST response page contains SSI tags - Set RH variable to indicate which module handled or failed the request - dbmmanage: Select the database format which is accepted by IBM HTTP Server - mod_rewrite: improve performance with large RewriteMap files - Fix memory leak in the cache handling of mod_rewrite - Fix storage corruption problem with mod_userdir+suexec processing - PK03603 worker mpm: don't take down the whole server for a transient thread creation failure - PK05830 Prevent hangs of child processes when writing to piped loggers at the time of graceful restart - PK05957 Support the suppress-error-charset setting, as with Apache 1.3.x - Set REDIRECT_REMOTE_USER for redirection of authenticated requests - worker mpm: lower severity of mutex "error" message which can occur normally during restart - display time taken to process request in mod_status - mod_proxy: Handle client-aborted connections correctly - mod_mime_magic on Windows: support magic files with native line endings - support SHA1 passwords for mod_auth and mod_auth_dbm - support SendBufferSize on Windows - start piped loggers via the shell on Unix, to support redirection - mod_cgid: Fix buffer overflow processing ScriptSock directive - mod_ibm_ldap: put timestamp on ldap trace records for correlation with other logs - mod_ibm_ldap: return authorization error instead of internal server error when password has expired - mod_ibm_ldap: add configuration control over whether or not referrals are chased via "LdapReferrals [On|Off]" and "LdapReferralHopLimit nnn" - mod_ibm_ldap: add rebind support for improved compatibility with Microsoft Active Directory 2003 - remove 2GB log file size restriction on Linux and Unix systems - PQ98957 fix HTTP RFC violations with handling of request bodies by proxy - PQ97712 fix worker MPM problem which left stranded processes after shutdown - fix mod_deflate problems handling 304 or 204 responses - PK00175 mod_ibm_ssl corrupts LIBPATH, breaking startup of third-party module - fix mod_ibm_ssl storage leak during apachectl restart or apachectl graceful processing - PQ86346 Seg fault with IHS ldap/nss ldap on 390 - fix mod_fastcgi incompatibility with WebSphere plug-in - rename zlib symbols used by mod_deflate to avoid collision with third-party modules - add "/server-status?showmodule" support for displaying name of module where request is stuck; ihsdiag 1.4.0 also exploits this support - CAN-2003-0020 escape data before writing to error log - fix ownership of sidd socket if IHS started as non-root on HP-UX - resolve CAN-2004-0809 and CAN-2004-0942 vulnerabilities - handle rewrite rules in <Location > applying to WebSphere resource - shut down worker MPM more quickly when processes are slow to exit - fix Expires handling with mod_cache - reduce severity of message for TCP_NODELAY error - PQ97125 CAN-2004-0942 fix memory consumption dos for folded MIME headers - add fatal exception hook for use by diagnostic modules - log reason for failing to connect to session id cache - fixed invalid info messages about non-FIPS cipher if FIPS enabled - fixed timeout problem in mod_ibm_ssl under load - fixed LDAP not escaping ctrl chars \,(,), and * as requred by RFC 2254 - changed LDAP queries to request minimal set of attributes - Potential denial of service exposure, CAN-2004-0786 - CAN-2004-0747 buffer overflow if extremely large environment variables are referenced in httpd.conf or .htaccess - fix termination of long request lines - fix mod_headers functional regression since 1.3 - fix mod_deflate large memory consumption - fix handling of "AllowEncodedSlashes On" - fix stranded piped logger processes on Windows - change default Windows service name to the same service name set by IHS installer so that -n option is not required - improve compatibility with 3rd party layered service providers on Win32 - fix crash in mod_ibm_ssl when using client auth - CAN-2004-0493 remote memory allocation vulnerability - rotatelogs ability to use local time - <VirtualHost myhost> now applies to all IP addresses for myhost - Fix mod_deflate to handle zero length responses (such as 304 response codes) Windows) - Unnecessary mod_expires error message in log - Microsoft Windows pool corruption at startup leading to restart problems - Some random storage logged for excessively long request line (Fixes in PQ85834 are not listed here.) Checksum of e-fix files is as follows: 2235690824 5427200 2.0.42.2-PK13230.aix.tar 939210679 19537920 2.0.42.2-PK13230.hpux.tar 854827529 4474880 2.0.42.2-PK13230.linux.tar 3035375644 4904960 2.0.42.2-PK13230.linux390.tar 218954935 6502400 2.0.42.2-PK13230.linuxppc.tar 2142785978 3932767 2.0.42.2-PK13230.nt.zip 3619888137 18137088 2.0.42.2-PK13230.sun.tar 1195706654 5304320 2.0.47.1-PK13230.aix.tar 3981623684 19752960 2.0.47.1-PK13230.hpux.tar 1282754306 4106240 2.0.47.1-PK13230.linux.tar 920133865 4874240 2.0.47.1-PK13230.linux390.tar 844387247 5683200 2.0.47.1-PK13230.linuxppc.tar 3545755713 4019142 2.0.47.1-PK13230.nt.zip 508704124 17763328 2.0.47.1-PK13230.sun.tarProblem conclusion Temporary fix Comments Special note - mod_whatkilledus users: Upgrade to mod_whatkilledus.so from ihsdiag 1.4.2 or later to correct a problem in mod_whatkilledus.so which can be encountered with this level of IBM HTTP Server. The latest ihsdiag package can be downloaded here: latest ihsdiag package can be downloaded here: ftp://ftp.software.ibm.com/software/websphere/ihs/support/Tools/ ihsdiag/
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: PK13891 Modules/Macros Publications Referenced
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Product categories: Software > Application Servers >
Distributed Application & Web Servers > IBM HTTP Server >
Runtime
Operating system(s):
Software version: 00A
Software edition:
Reference #: PK13230
IBM Group: Software Group
Modified date: Oct 21, 2005
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