Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2020-12723

Published: 1 June 2020

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario.]

Notes

AuthorNote
alexmurray
Affects 5.10.0 to 5.30.2

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
perl
Launchpad, Ubuntu, Debian
bionic
Released (5.26.1-6ubuntu0.5)
focal
Released (5.30.0-9ubuntu0.2)
groovy Not vulnerable
(5.30.3-4)
eoan Ignored
(end of life)
trusty
Released (5.18.2-2ubuntu1.7+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.28.3,5.30.3)
xenial
Released (5.22.1-9ubuntu0.9)
Patches:
upstream: https://github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184a

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H