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CVE-2015-8931

22
FAUCET Score

CVE-2015-8931 describes multiple integer overflows in libarchive versions prior to 3.2.0, specifically within the get_time_t_max and get_time_t_min functions, affecting products like Canonical, Debian, and SUSE. This vulnerability carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, requiring user interaction (e.g., opening a crafted mtree file), and potentially leading to high confidentiality, integrity, and availability impacts due to undefined behavior. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.901aCPE matchmatch criteria
cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:*
12CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.12%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0212 is in the 80th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libarchive-0:3.1.2-10.el7_2
View patch

Vendor Advisories (1)

redhatCVE-2015-8931Low

libarchive: Undefined behavior (signed integer overflow) in mtree parser

Jun 17, 2016

References

lists.opensuse.org / opensuse-security-announce/2016-07/msg00025.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-1844.html
blog.fuzzing-project.org / 47-Many-invalid-memory-access-issues-in-libarchive.html
Third Party Advisory
github.com / libarchive/libarchive/issues/539
ExploitIssue TrackingThird Party Advisory
security.gentoo.org / glsa/201701-03
security-tracker.debian.org / tracker/CVE-2015-8931
Issue TrackingThird Party Advisory
debian.org / security/2016/dsa-3657
openwall.com / lists/oss-security/2016/06/17/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/17/5
Mailing ListThird Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjul2016-3090544.html
securityfocus.com / bid/91338
ubuntu.com / usn/USN-3033-1
Third Party Advisory