CVE-2016-4300

Publication date 23 June 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Integer overflow in the read_SubStreamsInfo function in archive_read_support_format_7zip.c in libarchive before 3.2.1 allows remote attackers to execute arbitrary code via a 7zip file with a large number of substreams, which triggers a heap-based buffer overflow.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libarchive	16.04 LTS xenial	Fixed 3.1.2-11ubuntu0.16.04.2
	15.10 wily	Fixed 3.1.2-11ubuntu0.15.10.2
	14.04 LTS trusty	Fixed 3.1.2-7ubuntu2.3
	12.04 LTS precise	Fixed 3.0.3-6ubuntu1.3

Patch details

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

Package	Patch details
libarchive	Upstream: 3d469df Upstream: e79ef30

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3033-1
libarchive vulnerabilities
14 July 2016