CVE-2018-12015

Publication date 7 June 2018

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a directory-traversal protection mechanism, and overwrite arbitrary files, via an archive file containing a symlink and a regular file with the same name.

Status

Package Ubuntu Release Status
perl 18.04 LTS bionic
Fixed 5.26.1-6ubuntu0.1
17.10 artful
Fixed 5.26.0-8ubuntu1.2
16.04 LTS xenial
Fixed 5.22.1-9ubuntu0.5
14.04 LTS trusty
Fixed 5.18.2-2ubuntu1.6

Patch details

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

Package Patch details
perl

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 None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

Other references