Perl is vulnerable to information disclosure vulnerability. The vulnerability exists in the function S_grok_bslash_N of the file regcomp.c of the component Regex Handler. A heap-based buffer-overflow vulnerability could occur because it fails to properly bounds-check user-supplied input. Attackers could execute arbitrary code on the affected application via a crafted regular expression to access sensitive information from process memory. Failed attempts will likely cause a denial of service condition.
seclists.org/fulldisclosure/2019/Mar/49
www.securitytracker.com/id/1042181
access.redhat.com/errata/RHSA-2019:0001
access.redhat.com/errata/RHSA-2019:0010
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1646738
bugzilla.redhat.com/show_bug.cgi?id=1658969
github.com/Perl/perl5/commit/43b2f4ef399e2fd7240b4eeb0658686ad95f8e62
lists.fedoraproject.org/archives/list/[email protected]/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/
metacpan.org/changes/release/SHAY/perl-5.26.3
rt.perl.org/Ticket/Display.html?id=133192
seclists.org/bugtraq/2019/Mar/42
security.gentoo.org/glsa/201909-01
security.netapp.com/advisory/ntap-20190221-0003/
support.apple.com/kb/HT209600
usn.ubuntu.com/3834-1/
usn.ubuntu.com/3834-2/
www.debian.org/security/2018/dsa-4347
www.oracle.com/security-alerts/cpujul2020.html