Security Advisories (24)
CVE-2011-2728 (2012-12-21)

The bsd_glob function in the File::Glob module for Perl before 5.14.2 allows context-dependent attackers to cause a denial of service (crash) via a glob expression with the GLOB_ALTDIRFUNC flag, which triggers an uninitialized pointer dereference.

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-2010-4777 (2014-02-10)

The Perl_reg_numbered_buff_fetch function in Perl 5.10.0, 5.12.0, 5.14.0, and other versions, when running with debugging enabled, allows context-dependent attackers to cause a denial of service (assertion failure and application exit) via crafted input that is not properly handled when using certain regular expressions, as demonstrated by causing SpamAssassin and OCSInventory to crash.

CVE-2010-1158 (2010-04-20)

Integer overflow in the regular expression engine in Perl 5.8.x allows context-dependent attackers to cause a denial of service (stack consumption and application crash) by matching a crafted regular expression against a long string.

CVE-2009-3626 (2009-10-29)

Perl 5.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a UTF-8 character with a large, invalid codepoint, which is not properly handled during a regular-expression match.

CVE-2005-3962 (2005-12-01)

Integer overflow in the format string functionality (Perl_sv_vcatpvfn) in Perl 5.9.2 and 5.8.6 Perl allows attackers to overwrite arbitrary memory and possibly execute arbitrary code via format string specifiers with large values, which causes an integer wrap and leads to a buffer overflow, as demonstrated using format string vulnerabilities in Perl applications.

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-2011-1487 (2011-04-11)

The (1) lc, (2) lcfirst, (3) uc, and (4) ucfirst functions in Perl 5.10.x, 5.11.x, and 5.12.x through 5.12.3, and 5.13.x through 5.13.11, do not apply the taint attribute to the return value upon processing tainted input, which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.

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.

ACCENTS

Beyoncé! Beyoncé! Beyoncé!!

Beyoncé!  Beyoncé!
  Beyoncé!  Beyoncé!
    Beyoncé!  Beyoncé!

Older versions didn't convert Beyoncé in verbatim. EOP

   my $expected = <<"EOM";
.SH "ACCENTS"
.IX Header "ACCENTS"
Beyonce\\*'!  Beyonce\\*'!  Beyonce\\*'!!
.PP
.Vb 3
\\&    Beyonce\\*'!  Beyonce\\*'!
\\&      Beyonce\\*'!  Beyonce\\*'!
\\&        Beyonce\\*'!  Beyonce\\*'!
.Ve
.PP
Older versions didn't convert Beyonce\\*' in verbatim.
EOM
    $parser = Pod::Man->new or die "Cannot create parser\n";
    open my $out_fh, ">", 'out.tmp' or die "Can't open \$out_fh:  $!";
    $parser->output_fh($out_fh);
    $parser->parse_string_document($pod);
    close $out_fh;
    open my $in_fh, "<", 'out.tmp' or die "Can't open \$in_fh:  $!";
    while (<$in_fh>) { last if /^\.TH/; }
    my $man;
    {
        local $/ = undef;
        $man = <$in_fh>;
    }
    close $in_fh;
    unlink 'out.tmp';
    if ($man eq $expected) {
        print "ok 2\n";
    } else {
        print "not ok 2\n";
        print "Expected\n========\n$expected\nOutput\n======\n$man\n";
    }
}
}

my $n = 3; while (<DATA>) { next until $_ eq "###\n"; open (TMP, '> tmp.pod') or die "Cannot create tmp.pod: $!\n"; while (<DATA>) { last if $_ eq "###\n"; print TMP $_; } close TMP; my $parser = Pod::Man->new or die "Cannot create parser\n"; $parser->parse_from_file ('tmp.pod', 'out.tmp'); undef $parser; open (OUT, 'out.tmp') or die "Cannot open out.tmp: $!\n"; while (<OUT>) { last if /^\.TH/ } my $output; { local $/; $output = <OUT>; } close OUT; unlink ('tmp.pod', 'out.tmp'); my $expected = ''; while (<DATA>) { last if $_ eq "###\n"; $expected .= $_; } if ($output eq $expected) { print "ok $n\n"; } else { print "not ok $n\n"; print "Expected\n========\n$expected\nOutput\n======\n$output\n"; } $n++; }

# Below the marker are bits of POD and corresponding expected nroff output. # This is used to test specific features or problems with Pod::Man. The input # and output are separated by lines containing only ###.

__DATA__

### =head1 NAME

gcc - GNU project C and C++ compiler

C++ NOTES

Other mentions of C++. ### .SH "NAME" gcc \- GNU project C and C++ compiler .SH "\*(C+ NOTES" .IX Header " NOTES" Other mentions of \*(C+. ###

### =head1 PERIODS

This . should be quoted. ### .SH "PERIODS" .IX Header "PERIODS" This \f(CW\*(C`.\*(C'\fR should be quoted. ###

### =over 4

  • A bullet.

  • Another bullet.

  • Also a bullet.

### =over 4

foo

Not a bullet.

*

Also not a bullet.

### =over 4

1. Not a number
2. Spaced right
1 Not a number
2 Spaced right

### =over 4

*

Not bullet.

### =head1 SEQS

"=over ... =back"

"S<...>"

The quotes should be converted in the above to paired quotes. ### .SH "SEQS" .IX Header "SEQS" \&\*(L"=over ... =back\*(R" .PP \&\*(L"...\*(R" .PP The quotes should be converted in the above to paired quotes. ###

### =head1 YEN

It cost me ¥12345! That should be an X. ### .SH "YEN" .IX Header "YEN" It cost me X12345! That should be an X. ###

### =head1 agrave

Open à la shell. Previous versions mapped it wrong. ### .SH "agrave" .IX Header "agrave" Open a\*` la shell. Previous versions mapped it wrong. ###

### =over

First level

Blah blah blah....

  • Should be a bullet.

### =over 4

1. Check fonts in @CARP_NOT test.

### =head1 LINK QUOTING

There should not be double quotes: (?>pattern). ### .SH "LINK QUOTING" .IX Header "LINK QUOTING" There should not be double quotes: \f(CW\*(C`(?>pattern)\*(C'\fR. ###

### =head1 S<> MAGIC

Magic should be applied RISC OS to that. ### .SH " MAGIC" .IX Header " MAGIC" Magic should be applied \s-1RISC\s0\ \s-1OS\s0 to that. ###

### =head1 MAGIC MONEY

These should be identical.

Bippity boppity boo "The price is $100."

Bippity boppity boo "The price is $100." ### .SH "MAGIC MONEY" .IX Header "MAGIC MONEY" These should be identical. .PP Bippity boppity boo \*(L"The price is \f(CW$100\fR.\*(R" .PP Bippity boppity boo \*(L"The price is \f(CW$100\fR.\*(R" ###

### =head1 NAME

"Stuff" (no guesswork)

THINGS

Oboy, is this C++ "fun" yet! (guesswork) ### .SH "NAME" "Stuff" (no guesswork) .Sh "\s-1THINGS\s0" .IX Subsection "THINGS" Oboy, is this \*(C+ \*(L"fun\*(R" yet! (guesswork) ###

### =head1 Newline C Quote Weirdness

Blorp ' ''. Yes. ### .SH "Newline C Quote Weirdness" .IX Header "Newline C Quote Weirdness" Blorp \f(CW' \&''\fR. Yes. ###

### =head1 Soft Hypen Testing

sig­action manu­script Jark­ko Hie­ta­nie­mi

And again:

sig­action manu­script Jark­ko Hie­ta­nie­mi

And one more time:

sig­action manu­script Jark­ko Hie­ta­nie­mi ### .SH "Soft Hypen Testing" .IX Header "Soft Hypen Testing" sig\%action manu\%script Jark\%ko Hie\%ta\%nie\%mi .PP And again: .PP sig\%action manu\%script Jark\%ko Hie\%ta\%nie\%mi .PP And one more time: .PP sig\%action manu\%script Jark\%ko Hie\%ta\%nie\%mi ###

### =head1 X<> Whitespace

Blorpy prok wugga chachacha. ### .SH " Whitespace" .IX Header " Whitespace" Blorpy \fBprok\fR wugga chachacha. .IX Xref "bivav" ###

### =head1 Hyphen in S<>

Don't transform even-this hyphen. ### .SH "Hyphen in " .IX Header "Hyphen in " Don't transform\ even-this\ hyphen. ###

14 POD Errors

The following errors were encountered while parsing the POD:

Around line 39:

Non-ASCII character seen before =encoding in 'Beyoncé!'. Assuming CP1252

Around line 154:

'=item' outside of any '=over'

Around line 164:

=back doesn't take any parameters, but you said =back ### .IP "\(bu" 4 A bullet. .IP "\(bu" 4 Another bullet. .IP "\(bu" 4 Also a bullet. ###

Around line 177:

'=item' outside of any '=over'

Around line 181:

Expected text after =item, not a bullet

Around line 185:

=back doesn't take any parameters, but you said =back ### .IP "foo" 4 .IX Item "foo" Not a bullet. .IP "*" 4 Also not a bullet. ###

Around line 197:

'=item' outside of any '=over'

Around line 209:

=back doesn't take any parameters, but you said =back ### .IP "1. Not a number" 4 .IX Item "1. Not a number" .PD 0 .IP "2. Spaced right" 4 .IX Item "2. Spaced right" .IP "1 Not a number" 2 .IX Item "1 Not a number" .IP "2 Spaced right" 2 .IX Item "2 Spaced right" ###

Around line 225:

'=item' outside of any '=over'

Around line 229:

=back doesn't take any parameters, but you said =back ### .IP "*" 4 Not bullet. ###

Around line 276:

'=item' outside of any '=over'

Around line 288:

=back doesn't take any parameters, but you said =back ### .IP "First level" 4 .IX Item "First level" Blah blah blah.... .RS 4 .IP "\(bu" 4 Should be a bullet. .RE .RS 4 .RE ###

Around line 304:

'=item' outside of any '=over'

Around line 306:

=back doesn't take any parameters, but you said =back ### .ie n .IP "1. Check fonts in @CARP_NOT test." 4 .el .IP "1. Check fonts in \f(CW@CARP_NOT\fR test." 4 .IX Item "1. Check fonts in @CARP_NOT test." ###