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CVE-2018-12015

Published: 7 June 2018

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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
perl
Launchpad, Ubuntu, Debian
upstream
Released (5.26.2-6)
trusty
Released (5.18.2-2ubuntu1.6)
xenial
Released (5.22.1-9ubuntu0.5)
artful
Released (5.26.0-8ubuntu1.2)
bionic
Released (5.26.1-6ubuntu0.1)
Patches:
upstream: https://github.com/jib/archive-tar-new/commit/ae65651eab053fc6dc4590dbb863a268215c1fc5

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