PT-2018-3477 · Liblouis+2 · Liblouis+2

Hongxuchen · Published 2018-09-01 · Updated 2020-10-30 · CVE-2018-17294

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Liblouis versions prior to 3.7

Description: The issue is related to the matchCurrentInput function inside lou translateString.c of Liblouis, which does not check the input string's length. This allows attackers to cause a denial of service by crafting an input file with certain translation dictionaries, leading to an application crash via out-of-bounds read.

Recommendations: For versions prior to 3.7, update to version 3.7 or later to resolve the issue. As a temporary workaround, consider restricting the use of the matchCurrentInput function until a patch is available.

Exploit

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2020-01884

CVE-2018-17294

OPENSUSE-SU-2019:1160-1

OPENSUSE-SU-2019_1160-1

SUSE-SU-2019:0795-1

SUSE-SU-2019:13994-1

SUSE-SU-2019_13994-1

SUSE-SU-2020:3107-1

SUSE-SU-2020_3107-1

USN-3782-1

Affected Products

Liblouis

Suse

Ubuntu

References · 41

• 🔥 https://github.com/liblouis/liblouis/issues/635 · Exploit
• 🔥 https://github.com/Edward-L/fuzzing-pocs/tree/master/liblouis · Exploit
• https://github.com/liblouis/liblouis/commit/5e4089659bb49b3095fa541fa6387b4c40d7396e · Patch
• https://security-tracker.debian.org/tracker/CVE-2018-17294 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00038.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-17294 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3782-1 · Vendor Advisory
• https://usn.ubuntu.com/3782-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-12085 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0795-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-17294 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-17294 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3782-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-17294 · Security Note
• https://ubuntu.com/security/CVE-2018-17294 · Vendor Advisory