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=encoding utf8 | ||
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=head1 NAME | ||
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perl5382delta - what is new for perl v5.38.2 | ||
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=head1 DESCRIPTION | ||
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This document describes differences between the 5.38.0 release and the 5.38.2 | ||
release. B<Please note:> This document ignores Perl 5.38.1, a broken release | ||
which existed for a couple of days only. | ||
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If you are upgrading from an earlier release such as 5.37.0, first read | ||
L<perl5380delta>, which describes differences between 5.37.0 and 5.38.0. | ||
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=head1 Security | ||
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This release fixes the following security issues. | ||
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=head2 CVE-2023-47038 - Write past buffer end via illegal user-defined Unicode property | ||
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This vulnerability was reported directly to the Perl security team by | ||
Nathan Mills C<[email protected]>. | ||
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A crafted regular expression when compiled by perl 5.30.0 through | ||
5.38.0 can cause a one-byte attacker controlled buffer overflow in a | ||
heap allocated buffer. | ||
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=head2 CVE-2023-47039 - Perl for Windows binary hijacking vulnerability | ||
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This vulnerability was reported to the Intel Product Security Incident | ||
Response Team (PSIRT) by GitHub user ycdxsb | ||
L<https://github.com/ycdxsb/WindowsPrivilegeEscalation>. PSIRT then | ||
reported it to the Perl security team. | ||
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Perl for Windows relies on the system path environment variable to | ||
find the shell (C<cmd.exe>). When running an executable which uses | ||
Windows Perl interpreter, Perl attempts to find and execute C<cmd.exe> | ||
within the operating system. However, due to path search order issues, | ||
Perl initially looks for cmd.exe in the current working directory. | ||
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An attacker with limited privileges can exploit this behavior by | ||
placing C<cmd.exe> in locations with weak permissions, such as | ||
C<C:\ProgramData>. By doing so, when an administrator attempts to use | ||
this executable from these compromised locations, arbitrary code can | ||
be executed. | ||
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=head1 Acknowledgements | ||
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Perl 5.38.2 represents approximately 5 months of development since Perl | ||
5.38.0 and contains approximately 6,100 lines of changes across 34 files | ||
from 4 authors. | ||
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Excluding auto-generated files, documentation and release tools, there were | ||
approximately 1,300 lines of changes to 9 .pm, .t, .c and .h files. | ||
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Perl continues to flourish into its fourth decade thanks to a vibrant | ||
community of users and developers. The following people are known to have | ||
contributed the improvements that became Perl 5.38.2: | ||
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Karl Williamson, Paul Evans, Steve Hay, Tony Cook. | ||
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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. | ||
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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. | ||
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For a more complete list of all of Perl's historical contributors, please | ||
see the F<AUTHORS> file in the Perl source distribution. | ||
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=head1 Reporting Bugs | ||
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If you find what you think is a bug, you might check the perl bug database | ||
at L<https://github.com/Perl/perl5/issues>. There may also be information at | ||
L<http://www.perl.org/>, the Perl Home Page. | ||
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If you believe you have an unreported bug, please open an issue at | ||
L<https://github.com/Perl/perl5/issues>. Be sure to trim your bug down to a | ||
tiny but sufficient test case. | ||
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If the bug you are reporting has security implications which make it | ||
inappropriate to send to a public issue tracker, then see | ||
L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> | ||
for details of how to report the issue. | ||
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=head1 Give Thanks | ||
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If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, | ||
you can do so by running the C<perlthanks> program: | ||
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perlthanks | ||
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This will send an email to the Perl 5 Porters list with your show of thanks. | ||
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=head1 SEE ALSO | ||
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The F<Changes> file for an explanation of how to view exhaustive details on | ||
what changed. | ||
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The F<INSTALL> file for how to build Perl. | ||
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The F<README> file for general stuff. | ||
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The F<Artistic> and F<Copying> files for copyright information. | ||
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=cut |
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