CVE-2018-11598 — Espruino before 1

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Disclosure with user crafted input files via a Buffer Overflow or Out-of-bounds Read during syntax parsing of certain for loops in jsparse.c.

01What is this vulnerability?

Espruino before 1.99 allows attackers to cause a denial of service (application crash) and a potential Information Disclosure with user crafted input files via a Buffer Overflow or Out-of-bounds Read during syntax parsing of certain for loops in jsparse.c.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-05-31T16:00:00.000Z
• Last modified: 2024-09-16T17:39:06.848Z

09References

• github.com — https://github.com/espruino/Espruino/files/2025968/test_2.txt
• github.com — https://github.com/espruino/Espruino/files/2025956/test_0.txt
• github.com — https://github.com/espruino/Espruino/files/2025963/test_1.txt
• github.com — https://github.com/espruino/Espruino/commit/bf4416ab9129ee3afd56739ea4e3cd0da548…
• github.com — https://github.com/espruino/Espruino/issues/1437