/ 
perl-5.14.3
⭐ Starred 2013
/ ext/B/t/concise-xs.t
Security Advisories (18)
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-2020-10878 (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-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-2018-6913 (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-2018-18314 (2018-12-07)

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

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-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-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."

CVE-2013-1667 (2013-03-14)

The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.

CVE-2012-5195 (2012-12-18)

Heap-based buffer overflow in the Perl_repeatcpy function in util.c in Perl 5.12.x before 5.12.5, 5.14.x before 5.14.3, and 5.15.x before 15.15.5 allows context-dependent attackers to cause a denial of service (memory consumption and crash) or possibly execute arbitrary code via the 'x' string repeat operator.

CVE-2016-2381 (2016-04-08)

Perl might allow context-dependent attackers to bypass the taint protection mechanism in a child process via duplicate environment variables in envp.

CVE-2013-7422 (2015-08-16)

Integer underflow in regcomp.c in Perl before 5.20, as used in Apple OS X before 10.10.5 and other products, allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via a long digit string associated with an invalid backreference within a regular expression.

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-2024-56406 (2025-04-13)

A heap buffer overflow vulnerability was discovered in Perl. When there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`.    $ perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/;'    Segmentation fault (core dumped) It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.

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-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.

SYNOPSIS

To verify that B::Concise properly reports whether functions are XS, perl, or optimized constant subs, we test against a few core packages which have a stable API, and which have functions of all 3 types.

WHAT IS TESTED

5 core packages are tested; Digest::MD5, B, B::Deparse, Data::Dumper, and POSIX. These have a mix of the 3 expected implementation types; perl, XS, and constant (optimized constant subs).

%$testpkgs specifies what packages are tested; each package is loaded, and the stash is scanned for the function-names in that package.

Each value in %$testpkgs is a hash-of-lists (HoL) whose keys are implementation-types and values are lists of function-names of that type.

To keep these HoLs smaller and more manageable, they may carry an additional 'dflt' => $impl_Type, which means that unnamed functions are expected to be of that default implementation type. Those unnamed functions are known from the scan of the package stash.

HOW THEY'RE TESTED

Each function is 'rendered' by B::Concise, and result is matched against regexs for each possible implementation-type. For some packages, some functions may be unimplemented on some platforms.

To slay this maintenance dragon, the regexs used in like() match against renderings which indicate that there is no implementation.

If a function is implemented differently on different platforms, the test for that function will fail on one of those platforms. These specific functions can be skipped by a 'skip' => [ @list ] to the HoL mentioned previously. See usage for skip in B's HoL, which avoids testing a function which doesn't exist on non-threaded builds.

OPTIONS AND ARGUMENTS

-v and -V trigger 2 levels of verbosity.

-a uses Module::CoreList to run all core packages through the test, which gives some interesting results.

-c causes the expected XS/non-XS results to be marked with corrections, which are then reported at program END, in a form that's readily cut-and-pastable into this file.

-r <file> reads a file, as written by -c, and adjusts the expected results accordingly. The file is 'required', so @INC settings apply.

If module-names are given as args, those packages are run through the test harness; this is handy for collecting further items to test, and may be useful otherwise (ie just to see).

EXAMPLES

./perl -Ilib -wS ext/B/t/concise-xs.t -c Storable

Tests Storable.pm for XS/non-XS routines, writes findings (along with test results) to stdout. You could edit results to produce a test file, as in next example

./perl -Ilib -wS ext/B/t/concise-xs.t -r ./storable

Loads file, and uses it to set expectations, and run tests

./perl -Ilib -wS ext/B/t/concise-xs.t -avc > ../foo-avc 2> ../foo-avc2

Gets module list from Module::Corelist, and runs them all through the test. Since -c is used, this generates corrections, which are saved in a file, which is edited down to produce ../all-xs

./perl -Ilib -wS ext/B/t/concise-xs.t -cr ../all-xs > ../foo 2> ../foo2

This runs the tests specified in the file created in previous example. -c is used again, and stdout verifies that all the expected results given by -r ../all-xs are now seen.

Looking at ../foo2, you'll see 34 occurrences of the following error:

# err: Can't use an undefined value as a SCALAR reference at # lib/B/Concise.pm line 634, <DATA> line 1.