/ 
perl-5.23.2
⭐ Starred 2013
/ CPAN::Meta::History
Security Advisories (19)
CVE-2025-40909 (2025-05-30)

Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6

CVE-2016-6185 (2016-08-02)

The XSLoader::load method in XSLoader in Perl does not properly locate .so files when called in a string eval, which might allow local users to execute arbitrary code via a Trojan horse library under the current working directory.

CVE-2015-8608 (2017-02-07)

The VDir::MapPathA and VDir::MapPathW functions in Perl 5.22 allow remote attackers to cause a denial of service (out-of-bounds read) and possibly execute arbitrary code via a crafted (1) drive letter or (2) pInName argument.

CVE-2018-6797 (2018-04-17)

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.

CVE-2018-18314 (2018-12-07)

Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

CVE-2023-47100

In Perl before 5.38.2, S_parse_uniprop_string in regcomp.c can write to unallocated space because a property name associated with a \p{...} regular expression construct is mishandled. The earliest affected version is 5.30.0.

CVE-2020-12723 (2020-06-05)

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.

CVE-2020-10543 (2020-06-05)

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.

CVE-2018-18313 (2018-12-07)

Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.

CVE-2023-47039 (2023-10-30)

Perl for Windows relies on the system path environment variable to find the shell (cmd.exe). When running an executable which uses Windows Perl interpreter, Perl attempts to find and execute cmd.exe within the operating system. However, due to path search order issues, Perl initially looks for cmd.exe in the current working directory. An attacker with limited privileges can exploit this behavior by placing cmd.exe in locations with weak permissions, such as C:\ProgramData. By doing so, when an administrator attempts to use this executable from these compromised locations, arbitrary code can be executed.

CVE-2016-1238 (2016-08-02)

(1) cpan/Archive-Tar/bin/ptar, (2) cpan/Archive-Tar/bin/ptardiff, (3) cpan/Archive-Tar/bin/ptargrep, (4) cpan/CPAN/scripts/cpan, (5) cpan/Digest-SHA/shasum, (6) cpan/Encode/bin/enc2xs, (7) cpan/Encode/bin/encguess, (8) cpan/Encode/bin/piconv, (9) cpan/Encode/bin/ucmlint, (10) cpan/Encode/bin/unidump, (11) cpan/ExtUtils-MakeMaker/bin/instmodsh, (12) cpan/IO-Compress/bin/zipdetails, (13) cpan/JSON-PP/bin/json_pp, (14) cpan/Test-Harness/bin/prove, (15) dist/ExtUtils-ParseXS/lib/ExtUtils/xsubpp, (16) dist/Module-CoreList/corelist, (17) ext/Pod-Html/bin/pod2html, (18) utils/c2ph.PL, (19) utils/h2ph.PL, (20) utils/h2xs.PL, (21) utils/libnetcfg.PL, (22) utils/perlbug.PL, (23) utils/perldoc.PL, (24) utils/perlivp.PL, and (25) utils/splain.PL in Perl 5.x before 5.22.3-RC2 and 5.24 before 5.24.1-RC2 do not properly remove . (period) characters from the end of the includes directory array, which might allow local users to gain privileges via a Trojan horse module under the current working directory.

CVE-2020-10878 (2020-06-05)

Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situation. A crafted regular expression could lead to malformed bytecode with a possibility of instruction injection.

CVE-2018-6798 (2018-04-17)

An issue was discovered in Perl 5.22 through 5.26. Matching a crafted locale dependent regular expression can cause a heap-based buffer over-read and potentially information disclosure.

CVE-2018-6913 (2018-04-17)

Heap-based buffer overflow in the pack function in Perl before 5.26.2 allows context-dependent attackers to execute arbitrary code via a large item count.

CVE-2018-18312 (2018-12-05)

Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

CVE-2018-18311 (2018-12-07)

Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

CVE-2017-12883 (2017-09-19)

Buffer overflow in the S_grok_bslash_N function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to disclose sensitive information or cause a denial of service (application crash) via a crafted regular expression with an invalid '\\N{U+...}' escape.

CVE-2017-12837 (2017-09-19)

Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\\N{}' escape and the case-insensitive modifier.

CVE-2015-8853 (2016-05-25)

The (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c in Perl before 5.24.0 allow context-dependent attackers to cause a denial of service (infinite loop) via crafted utf-8 data, as demonstrated by "a\x80."

NAME

CPAN::Meta::History - history of CPAN Meta Spec changes

VERSION

version 2.150005

DESCRIPTION

The CPAN Meta Spec has gone through several iterations. It was originally written in HTML and later revised into POD (though published in HTML generated from the POD). Fields were added, removed or changed, sometimes by design and sometimes to reflect real-world usage after the fact.

This document reconstructs the history of the CPAN Meta Spec based on change logs, repository commit messages and the published HTML files. In some cases, particularly prior to version 1.2, the exact version when certain fields were introduced or changed is inconsistent between sources. When in doubt, the published HTML files for versions 1.0 to 1.4 as they existed when version 2 was developed are used as the definitive source.

Starting with version 2, the specification document is part of the CPAN-Meta distribution and will be published on CPAN as CPAN::Meta::Spec.

Going forward, specification version numbers will be integers and decimal portions will correspond to a release date for the CPAN::Meta library.

HISTORY

Version 2

April 2010

  • Revised spec examples as perl data structures rather than YAML

  • Switched to JSON serialization from YAML

  • Specified allowed version number formats

  • Replaced 'requires', 'build_requires', 'configure_requires', 'recommends' and 'conflicts' with new 'prereqs' data structure divided by phase (configure, build, test, runtime, etc.) and relationship (requires, recommends, suggests, conflicts)

  • Added support for 'develop' phase for requirements for maintaining a list of authoring tools

  • Changed 'license' to a list and revised the set of valid licenses

  • Made 'dynamic_config' mandatory to reduce confusion

  • Changed 'resources' subkey 'repository' to a hash that clarifies repository type, url for browsing and url for checkout

  • Changed 'resources' subkey 'bugtracker' to a hash for either web or mailto resource

  • Changed specification of 'optional_features':

    • Added formal specification and usage guide instead of just example

    • Changed to use new prereqs data structure instead of individual keys

  • Clarified intended use of 'author' as generalized contact list

  • Added 'release_status' field to indicate stable, testing or unstable status to provide hints to indexers

  • Added 'description' field for a longer description of the distribution

  • Formalized use of "x_" or "X_" for all custom keys not listed in the official spec

Version 1.4

June 2008

  • Noted explicit support for 'perl' in prerequisites

  • Added 'configure_requires' prerequisite type

  • Changed 'optional_features'

    • Example corrected to show map of maps instead of list of maps (though descriptive text said 'map' even in v1.3)

    • Removed 'requires_packages', 'requires_os' and 'excluded_os' as valid subkeys

Version 1.3

November 2006

  • Added 'no_index' subkey 'directory' and removed 'dir' to match actual usage in the wild

  • Added a 'repository' subkey to 'resources'

Version 1.2

August 2005

  • Re-wrote and restructured spec in POD syntax

  • Changed 'name' to be mandatory

  • Changed 'generated_by' to be mandatory

  • Changed 'license' to be mandatory

  • Added version range specifications for prerequisites

  • Added required 'abstract' field

  • Added required 'author' field

  • Added required 'meta-spec' field to define 'version' (and 'url') of the CPAN Meta Spec used for metadata

  • Added 'provides' field

  • Added 'no_index' field and deprecated 'private' field. 'no_index' subkeys include 'file', 'dir', 'package' and 'namespace'

  • Added 'keywords' field

  • Added 'resources' field with subkeys 'homepage', 'license', and 'bugtracker'

  • Added 'optional_features' field as an alternate under 'recommends'. Includes 'description', 'requires', 'build_requires', 'conflicts', 'requires_packages', 'requires_os' and 'excluded_os' as valid subkeys

  • Removed 'license_uri' field

Version 1.1

May 2003

  • Changed 'version' to be mandatory

  • Added 'private' field

  • Added 'license_uri' field

Version 1.0

March 2003

  • Original release (in HTML format only)

  • Included 'name', 'version', 'license', 'distribution_type', 'requires', 'recommends', 'build_requires', 'conflicts', 'dynamic_config', 'generated_by'

AUTHORS

  • David Golden <dagolden@cpan.org>

  • Ricardo Signes <rjbs@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2010 by David Golden and Ricardo Signes.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.