CVE-2017-9250 — The lexer_process_char_literal function in jerry-core/parser/js/js-lexer
The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0 does not skip memory allocation for empty strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via malformed JavaScript so
Published
2017-05-28T20:29:00.217
Last modified
2026-05-13T00:24:29.033
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
01What is this vulnerability?
The lexer_process_char_literal function in jerry-core/parser/js/js-lexer.c in JerryScript 1.0 does not skip memory allocation for empty strings, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via malformed JavaScript source code, related to the jmem_heap_free_block function.
02Affected products
No structured affected-product list available — see references below for vendor advisories.
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: 2017-05-28T20:29:00.217
- Last modified: 2026-05-13T00:24:29.033
09References
- www.securitytracker.com — http://www.securitytracker.com/id/1038413
- github.com — https://github.com/jerryscript-project/jerryscript/commit/e58f2880df608652aff7fd…
- github.com — https://github.com/jerryscript-project/jerryscript/issues/1821
- github.com — https://github.com/zherczeg/jerryscript/commit/03a8c630f015f63268639d3ed3bf82cff…
- www.securitytracker.com — http://www.securitytracker.com/id/1038413
- github.com — https://github.com/jerryscript-project/jerryscript/commit/e58f2880df608652aff7fd…
- github.com — https://github.com/jerryscript-project/jerryscript/issues/1821
- github.com — https://github.com/zherczeg/jerryscript/commit/03a8c630f015f63268639d3ed3bf82cff…
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