NULL Pointer Dereference Affecting libsass package, versions <3.5.5-4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-DEBIAN11-LIBSASS-528608
- published17 Dec 2018
- disclosed17 Dec 2018
Introduced: 17 Dec 2018
CVE-2018-20190 (opens in a new tab)How to fix?
Upgrade Debian:11 libsass to version 3.5.5-4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libsass package and not the libsass package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()(Sass::Supports_Operator*) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file.
References
- https://security-tracker.debian.org/tracker/CVE-2018-20190
- https://github.com/sass/libsass/issues/2786
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- http://www.securityfocus.com/bid/106232
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-20190