Out-of-bounds Read in Sass-Lang Libsass

CVE-2018-11693

An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::skip_over_scopes which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (69.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2018-11693?
CVE-2018-11693 is a high-severity vulnerability in Sass-Lang Libsass, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2018-06-04.
How severe is CVE-2018-11693?
High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2018-11693 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.