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CVE-2019-14866

Published: 2 November 2019

In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives. When cpio is used to create TAR archives from paths an attacker can write to, the resulting archive may contain files with permissions the attacker did not have or in paths he did not have access to. Extracting those archives from a high-privilege user without carefully reviewing them may lead to the compromise of the system.

Priority

Medium

Cvss 3 Severity Score

7.3

Score breakdown

Status

Package Release Status
cpio
Launchpad, Ubuntu, Debian
bionic
Released (2.12+dfsg-6ubuntu0.18.04.1)
disco
Released (2.12+dfsg-6ubuntu0.19.04.1)
eoan
Released (2.12+dfsg-9ubuntu0.1)
trusty
Released (2.11+dfsg-1ubuntu1.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (2.11+dfsg-5ubuntu1.1)
Patches:
other: https://cement.retrofitta.se/tmp/cpio-tar.patch
upstream: http://git.savannah.gnu.org/cgit/cpio.git/commit/?id=7554e3e42cd72f6f8304410c47fe6f8918e9bfd7

Severity score breakdown

Parameter Value
Base score 7.3
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H