CVE-2018-1000877

Publication date 20 December 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

libarchive version commit 416694915449219d505531b1096384f3237dd6cc onwards (release v3.1.0 onwards) contains a CWE-415: Double Free vulnerability in RAR decoder - libarchive/archive_read_support_format_rar.c, parse_codes(), realloc(rar->lzss.window, new_size) with new_size = 0 that can result in Crash/DoS. This attack appear to be exploitable via the victim must open a specially crafted RAR archive.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libarchive	18.10 cosmic	Fixed 3.2.2-5ubuntu0.1
	18.04 LTS bionic	Fixed 3.2.2-3.1ubuntu0.2
	16.04 LTS xenial	Fixed 3.1.2-11ubuntu0.16.04.5
	14.04 LTS trusty	Fixed 3.1.2-7ubuntu2.7

Patch details

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

Package	Patch details
libarchive	Upstream: https://github.com/libarchive/libarchive/pull/1105/commits/021efa522ad729ff0f5806c4ce53e4a6cc1daa31

Severity score breakdown

Parameter	Value
Base score	8.8 · High
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

References

Related Ubuntu Security Notices (USN)

USN-3859-1
libarchive vulnerabilities
15 January 2019