| Name | CVE-2018-19838 |
| 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(). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libsass (PTS) | stretch | 3.4.3-1 | vulnerable |
| buster | 3.5.5-4 | vulnerable |
| bullseye | 3.6.4+20201122-1 | fixed |
| bookworm | 3.6.5+20220909-1 | fixed |
| sid, trixie | 3.6.5+20231221-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libsass | source | (unstable) | 3.6.3-1 | low | | |
Notes
[buster] - libsass <no-dsa> (Minor issue)
[stretch] - libsass <no-dsa> (Minor issue)
https://github.com/sass/libsass/issues/2660
Fixed in 3.6.1, but 3.6.3 first to land in unstable