CVE-2017-13743

There is a buffer overflow in Liblouis 3.2.0, triggered in the function _lou_showString() in utils.c, that will lead to a remote denial of service attack.

Published: 2017-08-29 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-13743 is rated Moderate Risk (41.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.23%). 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-2017-13743

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 2026-04-17 0.40% 0.23% -0.17%
2 2025-03-30 0.51% 0.40% -0.11%
3 2025-03-29 — 0.51% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-13743

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-2017-13743

OS Trackers for CVE-2017-13743

vendor priority summary link
debian low CVE-2017-13743 low priority: Debian including 1 source packages (liblouis), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-13743
redhat low — https://access.redhat.com/security/cve/CVE-2017-13743
suse high CVE-2017-13743 severity important: SUSE including 63 source package names (liblouis, liblouis-1.7.0-1.3.3.1, …), 170 product×package rows across 49 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (49 product lines)): Fixed 119, Known Not Affected 51. https://www.suse.com/security/cve/CVE-2017-13743/
ubuntu negligible CVE-2017-13743 negligible priority: Ubuntu including 1 source packages (liblouis), 4 status rows across 4 suites (trusty, upstream, xenial, zesty): ignored 2, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2017-13743

Affected software / configurations for CVE-2017-13743

Vendor Product Version Raw CPE
liblouis liblouis 3.2.0 cpe:2.3:a:liblouis:liblouis:3.2.0:*:*:*:*:*:*:*

References for CVE-2017-13743

cvelogic Threat Intelligence