National Vulnerability Database

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    Vulnerabilities Detail

CVE-2015-8923 Detail

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.

Source:  MITRE
Description Last Modified:  09/20/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1844.html
http://www.debian.org/security/2016/dsa-3657
http://www.openwall.com/lists/oss-security/2016/06/17/2 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/06/17/5 Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.securityfocus.com/bid/91309
http://www.ubuntu.com/usn/USN-3033-1 Third Party Advisory
https://blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html Third Party Advisory
https://github.com/libarchive/libarchive/issues/514
https://security.gentoo.org/glsa/201701-03

Technical Details

Vulnerability Type (View All)

Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-8923
NVD Published Date:
09/20/2016
NVD Last Modified:
01/04/2018