This document describes differences between the 5.14.2 release and the
If you are upgrading from an earlier release such as 5.12.0, first read
perl5140delta, which describes differences between 5.12.0 and 5.14.0.
No changes since 5.14.0.
"Digest" unsafe use of eval (CVE-2011-3597)
The "Digest->new()" function did not properly sanitize input before
using it in an eval() call, which could lead to the injection of
arbitrary Perl code.
In order to exploit this flaw, the attacker would need to be able to
set the algorithm name used, or be able to execute arbitrary Perl code
This problem has been fixed.
Heap buffer overrun in 'x' string repeat operator (CVE-2012-5195)
Poorly written perl code that allows an attacker to specify the count
to perl's 'x' string repeat operator can already cause a memory
exhaustion denial-of-service attack. A flaw in versions of perl before
5.15.5 can escalate that into a heap buffer overrun; coupled with
versions of glibc before 2.16, it possibly allows the execution of
This problem has been fixed.
There are no changes intentionally incompatible with 5.14.0. If any
exist, they are bugs and reports are welcome.
There have been no deprecations since 5.14.0.
Modules and Pragmata
New Modules and Pragmata
Updated Modules and Pragmata
o PerlIO::scalar was updated to fix a bug in which opening a
filehandle to a glob copy caused assertion failures (under
debugging) or hangs or other erratic behaviour without debugging.
o ODBM_File and NDBM_File were updated to allow building on GNU/Hurd.
o IPC::Open3 has been updated to fix a regression introduced in perl
5.12, which broke "IPC::Open3::open3($in, $out, $err, '-')". [perl
Changes to Existing Documentation
o perlcheat was updated to 5.14.
Configuration and Compilation
o h2ph was updated to search correctly gcc include directories on
platforms such as Debian with multi-architecture support.
o In Configure, the test for procselfexe was refactored into a loop.
The FreeBSD hints file was corrected to be compatible with FreeBSD
Solaris and NetBSD
Configure was updated for "procselfexe" support on Solaris and
README.hpux was updated to note the existence of a broken header in
libutil is no longer used when compiling on Linux platforms, which
avoids warnings being emitted.
The system gcc (rather than any other gcc which might be in the
compiling user's path) is now used when searching for libraries
such as "-lm".
Mac OS X
The locale tests were updated to reflect the behaviour of locales
in Mountain Lion.
Various build and test fixes were included for GNU/Hurd.
LFS support was enabled in GNU/Hurd.
The NetBSD hints file was corrected to be compatible with NetBSD
o The sitecustomize support was made relocatableinc aware, so that
-Dusesitecustomize and -Duserelocatableinc may be used together.
o The smartmatch operator ("~~") was changed so that the right-hand
side takes precedence during "Any ~~ Object" operations.
o A bug has been fixed in the tainting support, in which an "index()"
operation on a tainted constant would cause all other constants to
become tainted. [perl #64804]
o A regression has been fixed that was introduced in perl 5.12,
whereby tainting errors were not correctly propagated through
"die()". [perl #111654]
o A regression has been fixed that was introduced in perl 5.14, in
which "/[[:lower:]]/i" and "/[[:upper:]]/i" no longer matched the
opposite case. [perl #101970]
Perl 5.14.3 represents approximately 12 months of development since
Perl 5.14.2 and contains approximately 2,300 lines of changes across 64
files from 22 authors.
Perl continues to flourish into its third decade thanks to a vibrant
community of users and developers. The following people are known to
have contributed the improvements that became Perl 5.14.3:
Abigail, Andy Dougherty, Carl Hayter, Chris 'BinGOs' Williams, Dave
Rolsky, David Mitchell, Dominic Hargreaves, Father Chrysostomos,
Florian Ragwitz, H.Merijn Brand, Jilles Tjoelker, Karl Williamson, Leon
Timmermans, Michael G Schwern, Nicholas Clark, Niko Tyni, Pino Toscano,
Ricardo Signes, Salvador Fandin~o, Samuel Thibault, Steve Hay, Tony
The list above is almost certainly incomplete as it is automatically
generated from version control history. In particular, it does not
include the names of the (very much appreciated) contributors who
reported issues to the Perl bug tracker.
Many of the changes included in this version originated in the CPAN
modules included in Perl's core. We're grateful to the entire CPAN
community for helping Perl to flourish.
For a more complete list of all of Perl's historical contributors,
please see the AUTHORS file in the Perl source distribution.
If you find what you think is a bug, you might check the articles
recently posted to the comp.lang.perl.misc newsgroup and the perl bug
database at http://rt.perl.org/perlbug/ . There may also be
information at http://www.perl.org/ , the Perl Home Page.
If you believe you have an unreported bug, please run the perlbug
Please only use this address for security issues in the Perl core, not
for modules independently distributed on CPAN.
The Changes file for an explanation of how to view exhaustive details
on what changed.
The INSTALL file for how to build Perl.
The README file for general stuff.
The Artistic and Copying files for copyright information.
perl v5.18.2 2013-11-04 PERL5143DELTA(1)
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