Security Advisories (23)
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-2011-0761 (2011-05-13)

Perl 5.10.x allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) by leveraging an ability to inject arguments into a (1) getpeername, (2) readdir, (3) closedir, (4) getsockname, (5) rewinddir, (6) tell, or (7) telldir function call.

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-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-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.

Gee, Brain, what do you want to do tonight? EOPOD

is($results, <<'EOHTML', "simple paragraph"); <p>Gee, Brain, what do you want to do tonight?</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

B: Now, Pinky, if by any chance you are captured during this mission, remember you are Gunther Heindriksen from Appenzell. You moved to Grindelwald to drive the cog train to Murren. Can you repeat that?

P: Mmmm, no, Brain, don't think I can. EOPOD

is($results, <<'EOHTML', "multiple paragraphs"); <p>B: Now, Pinky, if by any chance you are captured during this mission, remember you are Gunther Heindriksen from Appenzell. You moved to Grindelwald to drive the cog train to Murren. Can you repeat that?</p>

<p>P: Mmmm, no, Brain, don't think I can.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =over

  • P: Gee, Brain, what do you want to do tonight?

  • B: The same thing we do every night, Pinky. Try to take over the world!

EOPOD

is($results, <<'EOHTML', "simple bulleted list"); <ul>

<li>P: Gee, Brain, what do you want to do tonight?</li>

<li>B: The same thing we do every night, Pinky. Try to take over the world!</li>

</ul>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =over

  1. P: Gee, Brain, what do you want to do tonight?

  2. B: The same thing we do every night, Pinky. Try to take over the world!

EOPOD

is($results, <<'EOHTML', "numbered list"); <ol>

<li>1. P: Gee, Brain, what do you want to do tonight?</li>

<li>2. B: The same thing we do every night, Pinky. Try to take over the world!</li>

</ol>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =over

Pinky

Gee, Brain, what do you want to do tonight?

Brain

The same thing we do every night, Pinky. Try to take over the world!

EOPOD

is($results, <<'EOHTML', "list with text headings"); <ul>

<li>Pinky

<p>Gee, Brain, what do you want to do tonight?</p>

<li>Brain

<p>The same thing we do every night, Pinky. Try to take over the world!</p>

</ul>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

1 + 1 = 2;
2 + 2 = 4;

EOPOD

is($results, <<'EOHTML', "code block"); <pre><code> 1 + 1 = 2; 2 + 2 = 4;</code></pre>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a functionname. EOPOD is($results, <<"EOHTML", "code entity in a paragraph"); <p>A plain paragraph with a <code>functionname</code>.</p>

EOHTML

initialize($parser, $results); $parser->html_header("<html>\n<body>"); $parser->html_footer("</body>\n</html>"); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with body tags turned on. EOPOD is($results, <<"EOHTML", "adding html body tags"); <html> <body>

<p>A plain paragraph with body tags turned on.</p>

</body> </html>

EOHTML

initialize($parser, $results); $parser->html_css('style.css'); $parser->html_header(undef); $parser->html_footer(undef); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with body tags and css tags turned on. EOPOD like($results, qr/<link rel='stylesheet' href='style.css' type='text\/css'>/, "adding html body tags and css tags");

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with non breaking text. EOPOD is($results, <<"EOHTML", "Non breaking text in a paragraph"); <p>A plain paragraph with <nobr>non breaking text</nobr>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a Newlines. EOPOD is($results, <<"EOHTML", "Link entity in a paragraph"); <p>A plain paragraph with a <a href="${PERLDOC}Newlines">Newlines</a>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a "Newlines" in perlport. EOPOD is($results, <<"EOHTML", "Link entity in a paragraph"); <p>A plain paragraph with a <a href="${PERLDOC}perlport/Newlines">"Newlines" in perlport</a>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a Boo. EOPOD is($results, <<"EOHTML", "A link in a paragraph"); <p>A plain paragraph with a <a href="http://link.included.here">Boo</a>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a http://link.included.here. EOPOD is($results, <<"EOHTML", "A link in a paragraph"); <p>A plain paragraph with a <a href="http://link.included.here">http://link.included.here</a>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with bold text. EOPOD is($results, <<"EOHTML", "Bold text in a paragraph"); <p>A plain paragraph with <b>bold text</b>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with italic text. EOPOD is($results, <<"EOHTML", "Italic text in a paragraph"); <p>A plain paragraph with <i>italic text</i>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

A plain paragraph with a filename. EOPOD is($results, <<"EOHTML", "File name in a paragraph"); <p>A plain paragraph with a <i>filename</i>.</p>

EOHTML

initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

# this header is very important & don't you forget it
my $text = "File is: " . <FILE>;
EOPOD
is($results, <<"EOHTML", "Verbatim text with encodable entities");
<pre><code>  # this header is very important &amp; don&#39;t you forget it
my \$text = &quot;File is: &quot; . &lt;FILE&gt;;</code></pre>

EOHTML

SKIP: for my $use_html_entities (0, 1) { if ($use_html_entities and not $Pod::Simple::XHTML::HAS_HTML_ENTITIES) { skip("HTML::Entities not installed", 1); } local $Pod::Simple::XHTML::HAS_HTML_ENTITIES = $use_html_entities; initialize($parser, $results); $parser->parse_string_document(<<'EOPOD'); =pod

# this header is very important & don't you forget it
B<my $file = <FILEE<gt> || 'Blank!';>
my $text = "File is: " . <FILE>;
EOPOD
is($results, <<"EOHTML", "Verbatim text with markup and embedded formatting");
<pre><code>  # this header is very important &amp; don&#39;t you forget it
<b>my \$file = &lt;FILE&gt; || &#39;Blank!&#39;;</b>
my \$text = &quot;File is: &quot; . &lt;FILE&gt;;</code></pre>

EOHTML }

######################################

sub initialize { $_[0] = Pod::Simple::XHTML->new (); $_[0]->html_header(""); $_[0]->html_footer(""); $_[0]->output_string( \$results ); # Send the resulting output to a string $_[1] = ''; return; }

3 POD Errors

The following errors were encountered while parsing the POD:

Around line 74:

'=item' outside of any '=over'

Around line 102:

'=item' outside of any '=over'

Around line 130:

'=item' outside of any '=over'