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CVE-2017-14166

23
FAUCET Score

CVE-2017-14166 is a heap-based buffer over-read vulnerability in libarchive 3.3.2, specifically affecting the handling of crafted xar archives with empty strings in the atol8 function. This flaw can lead to a denial of service (application crash) and impacts various distributions including Canonical and Debian Linux, as well as the libarchive library itself. Rated as medium severity (CVSS 6.5), it requires user interaction (UI:R) and can be exploited remotely (AV:N) with low attack complexity (AC:L), resulting in high availability impact (A:H). Currently, 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
3.3.2CPE matchmatch criteria
cpe:2.3:a:libarchive:libarchive:3.3.2:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.21%
Probability of exploitation in next 30 days
EPSS Percentile
86.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0321 is in the 94th percentile among its peer group of 26,208 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libarchive-0:3.3.3-1.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libarchive
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libarchive

Vendor Advisories (1)

redhatCVE-2017-14166Low

libarchive: Heap-based buffer over-read in the atol8 function

Sep 5, 2017

References

blogs.gentoo.org / ago/2017/09/06/libarchive-heap-based-buffer-overflow-in-xml_data-archive_read_support_format_xar-c
PatchThird Party Advisory
github.com / libarchive/libarchive/commit/fa7438a0ff4033e4741c807394a9af6207940d71
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00037.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201908-11
usn.ubuntu.com / 3736-1
Third Party Advisory
debian.org / security/2018/dsa-4360
Third Party Advisory