CVE-2017-10687 json
In LibSass 3.4.5, there is a heap-based buffer over-read in the function json_mkstream() in sass_context.cpp.
published 2017-06-29 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-2334
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
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.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2017-10687 updated cvss 3.3
libsass: Heap buffer overf read in the json_mkstream() function
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.97% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
bugzilla.redhat.com
/show_bug.cgi?id=1466411
issue-tracking
Sources
- CVE List CVE-2017-10687
- NVD CVE-2017-10687
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.