HOME VULNERABILITIESCVE-2015-8931

HIGH

CVE-2015-8931

CWE-190Published: September 20, 2016· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Multiple integer overflows in the (1) get_time_t_max and (2) get_time_t_min functions in archive_read_support_format_mtree.c in libarchive before 3.2.0 allow remote attackers to have unspecified impact via a crafted mtree file, which triggers undefined behavior.

Technical Analysis

CVE-2015-8931 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges Req.None

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Debian1 product(s)

debian linux

libarchive1 product(s)

libarchive

SUSE3 product(s)

linux enterprise desktoplinux enterprise serverlinux enterprise software development kit

Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/06/17/2

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/06/17/5

ADVISORYhttp://www.ubuntu.com/usn/USN-3033-1

ADVISORYhttps://blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html

ADVISORYhttps://github.com/libarchive/libarchive/issues/539

ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2015-8931

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.html

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/06/17/2

ADVISORYhttp://www.openwall.com/lists/oss-security/2016/06/17/5

ADVISORYhttp://www.ubuntu.com/usn/USN-3033-1

ADVISORYhttps://blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.html

ADVISORYhttps://github.com/libarchive/libarchive/issues/539

ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2015-8931

All References (24)

→

http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.htmlThird 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/2016/06/17/2Mailing List · Third Party Advisory

→

http://www.openwall.com/lists/oss-security/2016/06/17/5Mailing List · Third Party Advisory

→

http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

→

http://www.securityfocus.com/bid/91338

→

http://www.ubuntu.com/usn/USN-3033-1Third Party Advisory

→

https://blog.fuzzing-project.org/47-Many-invalid-memory-access-issues-in-libarchive.htmlThird Party Advisory

→

https://github.com/libarchive/libarchive/issues/539Exploit · Issue Tracking · Third Party Advisory

→

https://security-tracker.debian.org/tracker/CVE-2015-8931Issue Tracking · Third Party Advisory

→

https://security.gentoo.org/glsa/201701-03

→

http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00025.htmlThird Party Advisory

→

http://rhn.redhat.com/errata/RHSA-2016-1844.html

→

http://www.debian.org/security/2016/dsa-3657

Quick Facts

CVE IDCVE-2015-8931

CVSS Score7.8 / 10

SeverityHIGH

WeaknessCWE-190

CISA KEVNo

Affected4 vendor(s)

PublishedSep 20, 2016

Related CVEs (CWE-190)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2015-8931 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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