CVE-2021-31875
Critical
Description
In mjs_json.c in Cesanta MongooseOS mJS 1.26, a maliciously formed JSON string can trigger an off-by-one heap-based buffer overflow in mjs_json_parse, which can potentially lead to redirection of control flow. NOTE: the original reporter disputes the significance of this finding because "there isn’t very much of an opportunity to exploit this reliably for an information leak, so there isn’t any real security impact."
SeverityCritical
CVSS9.8
Exploit probability—
ProductCesanta Mongooseos Mjs
PublishedApr 29, 2021
First seenApr 29, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cesanta mongooseos_mjs | 1.26 | — |
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