CVE-2017-14503

libarchive 3.3.2 suffers from an out-of-bounds read within lha_read_data_none() in archive_read_support_format_lha.c when extracting a specially crafted lha archive, related to lha_crc16.

Published: 2017-09-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-14503 is rated Moderate Risk (54.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.96%). EPSS rose +1.29% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-14503

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.67% 1.96% +1.29%
2 2025-03-30 1.56% 0.67% -0.90%
3 2025-03-29 — 1.56% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-14503

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2017-14503

OS Trackers for CVE-2017-14503

vendor priority summary link
debian not yet assigned CVE-2017-14503 not yet assigned priority: Debian including 1 source packages (libarchive), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-14503
gentoo normal CVE-2017-14503: 1 GLSA(s) (201908-11), 1 atom(s) (app-arch/libarchive); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-14503
redhat low — https://access.redhat.com/security/cve/CVE-2017-14503
suse medium CVE-2017-14503 severity moderate: SUSE including 49 source package names (bsdcpio-3.1.2-12.el7, bsdtar, …), 117 product×package rows across 62 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (62 product lines)): Fixed 105, Known Not Affected 12. https://www.suse.com/security/cve/CVE-2017-14503/
ubuntu low CVE-2017-14503 low priority: Ubuntu including 1 source packages (libarchive), 7 status rows across 7 suites (artful, bionic, cosmic, trusty, upstream, xenial, zesty): released 3, ignored 2, needs-triage 1, not-affected 1. https://ubuntu.com/security/CVE-2017-14503

Affected software / configurations for CVE-2017-14503

Vendor Product Version Raw CPE
libarchive libarchive 3.3.2 cpe:2.3:a:libarchive:libarchive:3.3.2:*:*:*:*:*:*:*

References for CVE-2017-14503

cvelogic Threat Intelligence