Out-of-bounds Read in Libsass

CVE-2017-10687

In LibSass 3.4.5, there is a heap-based buffer over-read in the function json_mkstream() in sass_context.cpp. A crafted input will lead to a remote denial of service attack.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-10687: held from 0.018 to 0.018.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-10687?
CVE-2017-10687 is a high-severity vulnerability in Libsass, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2017-06-29.
How severe is CVE-2017-10687?
High severity. CVSS v3 base score is 7.5 out of 10.