CVE-2018-19838 Denial of service in n/a
Attackers can cause a denial of service via stack consumption in LibSass by providing a crafted Sass file with recursive calls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-19838?
CVE-2018-19838 is a medium-severity denial of service vulnerability in n/a, published on 4 Dec 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
In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().
Weakness: CWE-400
Which versions are affected by CVE-2018-19838?
It affects 1 product.
Products include Sass-Lang Libsass.
How do I fix CVE-2018-19838?
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-2018-19838 being exploited?
There is no known exploitation of CVE-2018-19838 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2018-19838, GHSA-wjrc-f8qw-j9q6, UBUNTU-CVE-2018-19838.