Resource Exhaustion Affecting libsass package, versions <3.5.4+20180621~c0a6cf3-1
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.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBSASS-296031
- published4 Dec 2018
- disclosed4 Dec 2018
Introduced: 4 Dec 2018
CVE-2018-19837 (opens in a new tab)How to fix?
Upgrade Debian:unstable libsass to version 3.5.4+20180621~c0a6cf3-1 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:unstable relevant fixed versions and status.
In LibSass prior to 3.5.5, Sass::Eval::operator()(Sass::Binary_Expression*) inside eval.cpp allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, because of certain incorrect parsing of '%' as a modulo operator in parser.cpp.
References
- https://security-tracker.debian.org/tracker/CVE-2018-19837
- https://github.com/sass/libsass/commit/210fdff7a65370c2ae24e022a2b35da8c423cc5f
- https://github.com/sass/libsass/issues/2659
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-19837