CVE-2015-8923

Publication date 31 December 2015

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

The process_extra function in libarchive before 3.2.0 uses the size field and a signed number in an offset, which allows remote attackers to cause a denial of service (crash) via a crafted zip file.

Status

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

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3033-1
    • libarchive vulnerabilities
    • 14 July 2016

Other references