HIGH
Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
http://www.securityfocus.com/bid/106145
http://www.securitytracker.com/id/1042181
https://access.redhat.com/errata/RHSA-2019:0001
https://access.redhat.com/errata/RHSA-2019:0010
https://bugzilla.redhat.com/show_bug.cgi?id=1646751
https://github.com/Perl/perl5/commit/19a498a461d7c81ae3507c450953d1148efecf4f
https://metacpan.org/changes/release/SHAY/perl-5.26.3
https://rt.perl.org/Ticket/Display.html?id=131649
https://security.gentoo.org/glsa/201909-01
https://security.netapp.com/advisory/ntap-20190221-0003/
https://usn.ubuntu.com/3834-1/
Source: MITRE
Published: 2018-12-07
Updated: 2020-07-15
Type: CWE-119
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL