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Apache 1.3.31 is the best available version of the 1.3 series, and is recommended over all previous 1.3 releases. This release fixes a number of bugs and addresses 4 security issues described in CAN-2003-0987 (cve.mitre.org), CAN-2003-0020 (cve.mitre.org), CAN-2004-0174 (cve.mitre.org) and CAN-2003-0993 (cve.mitre.org).

"Apache 1.3.31 Major changes

Security vulnerabilities

The main security vulnerabilities addressed in 1.3.31 are:

* o CAN-2003-0987 (cve.mitre.org)

In mod_digest, verify whether the nonce returned in the client

response is one we issued ourselves. This problem does not affect

mod_auth_digest.

* CAN-2003-0020 (cve.mitre.org)

Escape arbitrary data before writing into the errorlog.

* CAN-2004-0174 (cve.mitre.org)

Fix starvation issue on listening sockets where a short-lived

connection on a rarely-accessed listening socket will cause a child to

hold the accept mutex and block out new connections until another

connection arrives on that rarely-accessed listening socket.

* CAN-2003-0993 (cve.mitre.org)

Fix parsing of Allow/Deny rules using IP addresses without a

netmask; issue is only known to affect big-endian 64-bit platforms

New features

New features that relate to specific platforms:

* Linux 2.4+: If Apache is started as root and you

codeCoreDumpDirectory, coredumps are enabled via the prctl() syscall.

New features that relate to specific platforms:

* Add mod_whatkilledus and mod_backtrace (experimental) for reporting

diagnostic information after a child process crash.

* Add fatal exception hook for running diagnostic code after a crash.

* Forensic logging module added (mod_log_forensic)

* '%X' is now accepted as an alias for '%c' in the LogFormat

directive. This allows you to configure logging to still log the

connection status even with mod_ssl

Bugs fixed

The following bugs were found in Apache 1.3.29 (or earlier) and have been

fixed in Apache 1.3.31:

* Fix memory corruption problem with ap_custom_response() function.

The core per-dir config would later point to request pool data that would

be reused for different purposes on different requests.

* mod_usertrack no longer inspects the Cookie2 header for the cookie

name. It also no longer overwrites other cookies.

* Fix bug causing core dump when using CookieTracking without

specifying a CookieName directly.

* UseCanonicalName off was ignoring the client provided port information."