CVE-2018-6798

Publication date 14 April 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An issue was discovered in Perl 5.22 through 5.26. Matching a crafted locale dependent regular expression can cause a heap-based buffer over-read and potentially information disclosure.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
perl	17.10 artful	Fixed 5.26.0-8ubuntu1.1
	16.04 LTS xenial	Fixed 5.22.1-9ubuntu0.3
	14.04 LTS trusty	Not affected

Notes

ratliff

Fix developed by Yves Orton, Karl Williamson, and Tony Cook

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
perl	Upstream: https://perl5.git.perl.org/perl.git/commitdiff/0abf1e8d89aecd32dbdabda5da4d52a2d57a7cff Upstream: https://perl5.git.perl.org/perl.git/commitdiff/f65da1ca2eee74696d9c120e9d69af37b4fa1920 Upstream: https://perl5.git.perl.org/perl.git/commitdiff/8e6f44c90c7fa1f63c19a44c45482b09a407e15b Upstream: https://perl5.git.perl.org/perl.git/commitdiff/8b80ce67ff257aaa36e47eaf4194d27a51595524

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N