CVE-2018-17294 Denial of service in n/a

What is CVE-2018-17294?

CVE-2018-17294 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The matchCurrentInput function inside lou_translateString.c of Liblouis prior to 3.7 does not check the input string's length, allowing attackers to cause a denial of service (application crash via out-of-bounds read) by crafting an input file with certain translation dictionaries.

Weakness: CWE-125

Which versions are affected by CVE-2018-17294?

It affects 3 products.

Products include Canonical Ubuntu Linux, Liblouis Liblouis, Opensuse Leap.

How do I fix CVE-2018-17294?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-17294 being exploited?

There is no known exploitation of CVE-2018-17294 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-17294, GHSA-xg7f-9m4r-jh69, SUSE-SU-2019:13994-1, SUSE-SU-2020:3107-1, UBUNTU-CVE-2018-17294.