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CVE-2018-1000878

Published: 20 December 2018

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-416: Use After Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c that can result in Crash/DoS - it is unknown if RCE is possible. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
libarchive
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty
Released (3.1.2-7ubuntu2.7)
xenial
Released (3.1.2-11ubuntu0.16.04.5)
bionic
Released (3.2.2-3.1ubuntu0.2)
cosmic
Released (3.2.2-5ubuntu0.1)
Patches:
upstream: https://github.com/libarchive/libarchive/pull/1105/commits/bfcfe6f04ed20db2504db8a254d1f40a1d84eb28

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H