Out-of-bounds Read in Sass-Lang Libsass
CVE-2018-19839
In LibSass prior to 3.5.5, the function handle_error in sass_context.cpp allows attackers to cause a denial-of-service resulting from a heap-based buffer over-read via a crafted sass file.
Vulnerability class: Buffer Overflow
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: 0.022 (81.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/sass/libsass/pull/2767 (Patch, Third Party Advisory)
- github.com/sass/libsass/issues/2657 (Exploit, 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-2018-19839?
- CVE-2018-19839 is a medium-severity vulnerability in Sass-Lang Libsass, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2018-12-04.
- How severe is CVE-2018-19839?
- Medium severity. CVSS v3 base score is 6.5 out of 10.