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Vulnerability of Perl Core: memory corruption via Regular Expression S_study_chunk

Synthesis of the vulnerability 

An attacker can trigger a memory corruption via Regular Expression S_study_chunk() of Perl Core, in order to trigger a denial of service, and possibly to run code.
Impacted software: Fedora, OpenBSD, openSUSE Leap, Perl Core, SUSE Linux Enterprise Desktop, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 02/06/2020.
Références of this announce: CVE-2020-12723, FEDORA-2020-4021bf2ae8, FEDORA-2020-fd73c08076, openSUSE-SU-2020:0850-1, SUSE-SU-2020:1662-1, SUSE-SU-2020:1682-1, SUSE-SU-2020:1682-2, VIGILANCE-VUL-32368.

Description of the vulnerability 

An attacker can trigger a memory corruption via Regular Expression S_study_chunk() of Perl Core, in order to trigger a denial of service, and possibly to run code.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This weakness alert impacts software or systems such as Fedora, OpenBSD, openSUSE Leap, Perl Core, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this security bulletin.

Solutions for this threat 

Perl Core: version 5.30.3.
The version 5.30.3 is fixed:
  http://www.cpan.org/src/

Perl Core: version 5.28.3.
The version 5.28.3 is fixed:
  http://www.cpan.org/src/

Fedora 31: new perl packages.
New packages are available:
  Fedora 31: perl 5.30.3-452.fc31

Fedora 32: new perl packages.
New packages are available:
  Fedora 32: perl 5.30.3-453.fc32

OpenBSD: patch for Perl Regular Expression Compiler.
A patch is available:
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.6/common/029_perl.patch.sig
  https://ftp.openbsd.org/pub/OpenBSD/patches/6.7/common/007_perl.patch.sig

openSUSE Leap 15.1: new perl packages.
New packages are available:
  openSUSE Leap 15.1: perl 5.26.1-lp151.9.6.1

SUSE LE 12: new perl packages.
New packages are available:
  SUSE LE 12 SP2: perl 5.18.2-12.23.1
  SUSE LE 12 SP3: perl 5.18.2-12.23.1
  SUSE LE 12 SP4: perl 5.18.2-12.23.1
  SUSE LE 12 SP5: perl 5.18.2-12.23.1

SUSE LE 15: new perl packages.
New packages are available:
  SUSE LE 15 RTM: perl 5.26.1-7.12.1
  SUSE LE 15 SP1: perl 5.26.1-7.12.1
  SUSE LE 15 SP2: perl 5.26.1-7.12.1

SUSE LE 15 SP1: new perl packages.
New packages are available:
  SUSE LE 15 SP1: perl 5.26.1-7.12.1

Wind River Linux: version 10.19.45.10.
The version 10.19.45.10 is fixed:
  https://support2.windriver.com/index.php?page=cve&on=list&show=50&product_id=1&product_version%5B0%5D=24&id_status%5B0%5D=4&cve_id_filter=&s=&submit=&order_by=cve_modified_date&order_way=desc#list
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