NULL pointer dereference in Sass-Lang Libsass
CVE-2018-19797
In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Selector_List::populate_extends in SharedPtr.hpp (used by ast.cpp and ast_selectors.cpp) may cause a Denial of Service (application crash) via a crafted sass input file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Sass-Lang Libsass — versions 3.5.5
Weakness classification (CWE)
References
- github.com/sass/libsass/issues/2779 (Patch, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html (vendor-advisory)
Frequently asked questions
- What is CVE-2018-19797?
- CVE-2018-19797 is a medium-severity vulnerability in Sass-Lang Libsass, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-12-03.
- How severe is CVE-2018-19797?
- Medium severity. CVSS v3 base score is 6.5 out of 10.