CVE-2015-8918

Publication date 20 September 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The archive_string_append function in archive_string.c in libarchive before 3.2.0 allows remote attackers to cause a denial of service (crash) via a crafted cab files, related to "overlapping memcpy."

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libarchive	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Not affected

Notes

mdeslaur

never affected a released version, introduced and fixed between 3.1.2 and 3.2.0. Introduced by: https://github.com/libarchive/libarchive/commit/cf8e67ffc8a2227b63fc6d3d1569b0214f160f54

Patch details

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

Package	Patch details
libarchive	Upstream: b6ba560

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Other references

https://www.cve.org/CVERecord?id=CVE-2015-8918