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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3718
                           perl security update
                             30 November 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           perl
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Unknown/Unspecified
                   Access Privileged Data          -- Unknown/Unspecified
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-18314 CVE-2018-18313 CVE-2018-18312
                   CVE-2018-18311  

Original Bulletin: 
   http://www.debian.org/security/2018/dsa-4347

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running perl check for an updated version of the software for their
         operating system.

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Debian Security Advisory DSA-4347-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
November 29, 2018                     https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : perl
CVE ID         : CVE-2018-18311 CVE-2018-18312 CVE-2018-18313 CVE-2018-18314

Multiple vulnerabilities were discovered in the implementation of the
Perl programming language. The Common Vulnerabilities and Exposures
project identifies the following problems:

CVE-2018-18311

    Jayakrishna Menon and Christophe Hauser discovered an integer
    overflow vulnerability in Perl_my_setenv leading to a heap-based
    buffer overflow with attacker-controlled input.

CVE-2018-18312

    Eiichi Tsukata discovered that a crafted regular expression could
    cause a heap-based buffer overflow write during compilation,
    potentially allowing arbitrary code execution.

CVE-2018-18313

    Eiichi Tsukata discovered that a crafted regular expression could
    cause a heap-based buffer overflow read during compilation which
    leads to information leak.

CVE-2018-18314

    Jakub Wilk discovered that a specially crafted regular expression
    could lead to a heap-based buffer overflow.

For the stable distribution (stretch), these problems have been fixed in
version 5.24.1-3+deb9u5.

We recommend that you upgrade your perl packages.

For the detailed security status of perl please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/perl

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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