CVE-2016-4300

Name: CVE-2016-4300
Creator: NVD / NIST
Published: 2016-09-21T14:25:01.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.94%

Last modified Jun 17, 2026

CVE-2016-4300 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.94% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

4.94%

91.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Libarchive	Libarchive	<= 3.2.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Hpc Node	7.0
Redhat	Enterprise Linux Hpc Node Eus	7.2
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	7.2
Redhat	Enterprise Linux Server Eus	7.2
Redhat	Enterprise Linux Workstation	7.0

References

http://blog.talosintel.com/2016/06/the-poisoned-archives.htmlExploit, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1844.htmlThird Party Advisory
http://www.debian.org/security/2016/dsa-3657
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.securityfocus.com/bid/91326Third Party Advisory, VDB Entry
http://www.talosintel.com/reports/TALOS-2016-0152/Exploit, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1348439Issue Tracking
https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573Issue Tracking, Patch, Third Party Advisory
https://github.com/libarchive/libarchive/issues/718Issue Tracking, Patch, Third Party Advisory
https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00062&languageid=en-fr
https://security.gentoo.org/glsa/201701-03
http://blog.talosintel.com/2016/06/the-poisoned-archives.htmlExploit, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1844.htmlThird Party Advisory
http://www.debian.org/security/2016/dsa-3657
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.securityfocus.com/bid/91326Third Party Advisory, VDB Entry
http://www.talosintel.com/reports/TALOS-2016-0152/Exploit, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1348439Issue Tracking
https://github.com/libarchive/libarchive/commit/e79ef306afe332faf22e9b442a2c6b59cb175573Issue Tracking, Patch, Third Party Advisory
https://github.com/libarchive/libarchive/issues/718Issue Tracking, Patch, Third Party Advisory
https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00062&languageid=en-fr
https://security.gentoo.org/glsa/201701-03

Timeline

Published: Sep 21, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4300?

How severe is CVE-2016-4300?

Severity scoring for CVE-2016-4300 is pending analysis. The EPSS model estimates a 4.94% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4300?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-4300?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST