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Vulnerability record · CVE-2015-8923 · published 20 September 2016

CVE-2015-8923: Libarchive improper input validation vulnerability

Libarchive · Libarchive

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.

6.5 CVSS 3.0 Medium EPSS 2.9% · top 13.7% CWE-20 · Improper input validation
6.5CVSS 3.0 base score, v2 4.3
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

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.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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
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

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Source: NIST National Vulnerability Database (record CVE-2015-8923), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.