CVE-2018-19838 — Uncontrolled Resource Consumption in Libsass

CWE-400 — Uncontrolled Resource Consumption7 documents5 sources
Severity
6.5MEDIUMNVD
EPSS
0.8%
top 26.82%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LibsassSass-lang LibsassDebian Libsass
Timeline
PublishedDec 4
Latest updateMay 14

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().

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/libsass< libsass 3.6.3-1 (bookworm)
▶NVDsass-lang/libsass< 3.5.5
▶Debianlibsass/libsass< 3.6.3-1+3

🔴Vulnerability Details

2
GHSA
GHSA-wjrc-f8qw-j9q6: In LibSass prior to 3↗2022-05-14
▶
OSV
CVE-2018-19838: In LibSass prior to 3↗2018-12-04
▶

📋Vendor Advisories

1
Debian
CVE-2018-19838: libsass - In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS ...↗2018
▶

💬Community

3
Bugzilla
CVE-2018-19797 CVE-2018-19826 CVE-2018-19827 CVE-2018-19837 CVE-2018-19838 CVE-2018-19839 CVE-2018-20190 libsass: various flaws [epel-7]↗2019-01-31
▶
Bugzilla
CVE-2018-19797 CVE-2018-19826 CVE-2018-19827 CVE-2018-19837 CVE-2018-19838 CVE-2018-19839 CVE-2018-20190 libsass: various flaws [fedora-all]↗2019-01-31
▶
Bugzilla
CVE-2018-19838 libsass: Stack consumption in ast.cpp resulting in a denial of service↗2019-01-31
▶