Out-of-bounds read in Liblouis - CVE-2017-13738

Vulnerability identifier: #VU38400

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-13738

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

There is an illegal address access in the _lou_getALine function in compileTranslationTable.c:346 in Liblouis 3.2.0.

Liblouis
Ubuntu
Fedora
python-louis (Ubuntu package)
liblouis2 (Ubuntu package)
python3-louis (Ubuntu package)
liblouis-bin (Ubuntu package)
liblouis9 (Ubuntu package)
liblouis12 (Ubuntu package)
liblouis

Install update from vendor's website.

python-louis (Ubuntu package) - addressed in versions 2.5.3-2ubuntu1.1, 2.6.4-2ubuntu0.1, 3.0.0-3ubuntu0.2
liblouis2 (Ubuntu package) - update to 2.5.3-2ubuntu1.1
python3-louis (Ubuntu package) - addressed in versions 2.5.3-2ubuntu1.1, 2.6.4-2ubuntu0.1, 3.0.0-3ubuntu0.2
liblouis-bin (Ubuntu package) - addressed in versions 2.5.3-2ubuntu1.1, 2.6.4-2ubuntu0.1, 3.0.0-3ubuntu0.2
liblouis9 (Ubuntu package) - update to 2.6.4-2ubuntu0.1
liblouis12 (Ubuntu package) - update to 3.0.0-3ubuntu0.2
liblouis - addressed in versions 2.6.2-12.fc26, 2.6.2-12.fc27

• http://www.securityfocus.com/bid/100607
• https://access.redhat.com/errata/RHSA-2017:3111
• https://bugzilla.redhat.com/show_bug.cgi?id=1484297

• Multiple vulnerabilities in Liblouis
• Fedora 26 update for liblouis
• Fedora 27 update for liblouis
• Ubuntu update for liblouis